[
    {
        "ch": "What is the general properties of metals and their alloys?",
        "ansGr": [
            {
                "ans": [
                    "Hardness.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Transparency.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Insulating.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does the term 'ferrous' refer to?",
        "ansGr": [
            {
                "ans": [
                    "A group of metals that primarily contain iron.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A group of metals that have low density.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A group of metals that primarily contain aluminum.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following materials is a type of ferrous metal?",
        "ansGr": [
            {
                "ans": [
                    "Carbon steel.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Alluminum alloy.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Copper.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is essential to check when selecting substitute metals for aircraft repair and maintenance?",
        "ansGr": [
            {
                "ans": [
                    "The appropriate Structural Repair Manual.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The appropriate Minimum Equipment List.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The appropriate Consumable Material List.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which type of materials is commonly subjected to heat treatment?",
        "ansGr": [
            {
                "ans": [
                    "Alloys.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A pure metal.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Plastics.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following statements is true about chrome-nickel or stainless steels?",
        "ansGr": [
            {
                "ans": [
                    "They are known for their corrosion resistance.",
                    "true"
                ]
            },
            {
                "ans": [
                    "They are primarily used for electrical applications.",
                    "false"
                ]
            },
            {
                "ans": [
                    "They are weaker than carbon steels.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following requirements must be met when selecting substitute metals for aircraft repair?",
        "ansGr": [
            {
                "ans": [
                    "Maintaining the original strength of the structure.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Maintaining electrical conductivity for lightning protection.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Maintaining the repairability of the material.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which fluid can be used to cool steel during the tempering process?",
        "ansGr": [
            {
                "ans": [
                    "Oil.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Fuel.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Hydraulic fluid.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When a piece of metal is shaped or bent while in a cold state, it is referred to as:",
        "ansGr": [
            {
                "ans": [
                    "Cold worked",
                    "true"
                ]
            },
            {
                "ans": [
                    "Annealed",
                    "false"
                ]
            },
            {
                "ans": [
                    "Tempered",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which state is the metal in during the heat treatment process?",
        "ansGr": [
            {
                "ans": [
                    "Solid.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Liquid.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Gas.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What equipment is used for the metal heat treatment process?",
        "ansGr": [
            {
                "ans": [
                    "Furnaces or salt baths.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Microwaves or ovens.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Autoclaves and refrigerators.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the first important consideration in the heat treatment of a steel part?",
        "ansGr": [
            {
                "ans": [
                    "The chemical composition of the steel part.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Temperature controls in the furnace.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The rate of heating and cooling.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When is the hardness testing method performed?",
        "ansGr": [
            {
                "ans": [
                    "Prior to heat treatment.",
                    "true"
                ]
            },
            {
                "ans": [
                    "After heat treatment.",
                    "false"
                ]
            },
            {
                "ans": [
                    "While heat treatment.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which unit is commonly used to measure tensile strength?",
        "ansGr": [
            {
                "ans": [
                    "Pascal (Pa)",
                    "true"
                ]
            },
            {
                "ans": [
                    "Newton (N)",
                    "false"
                ]
            },
            {
                "ans": [
                    "Kilogram (Kg)",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does tensile strength compare between different materials?",
        "ansGr": [
            {
                "ans": [
                    "Weight per unit area",
                    "true"
                ]
            },
            {
                "ans": [
                    "Weight only",
                    "false"
                ]
            },
            {
                "ans": [
                    "Weight per unit volume",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is fatigue in materials?",
        "ansGr": [
            {
                "ans": [
                    "A weakness caused by repeated stress variations",
                    "true"
                ]
            },
            {
                "ans": [
                    "A chemical reaction inside metal",
                    "false"
                ]
            },
            {
                "ans": [
                    "A sudden failure due to overload",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What inspections are essential at the beginning of damage assessment?",
        "ansGr": [
            {
                "ans": [
                    "Inspection of riveted joints and corrosion detection",
                    "true"
                ]
            },
            {
                "ans": [
                    "Inspection of paint condition and surface cleanliness",
                    "false"
                ]
            },
            {
                "ans": [
                    "Inspection of screw and nut condition in the affected area",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What may cracked or chipped paint around rivet heads indicate?",
        "ansGr": [
            {
                "ans": [
                    "Shifted or loose rivets",
                    "true"
                ]
            },
            {
                "ans": [
                    "Corrosion under the fuselage",
                    "false"
                ]
            },
            {
                "ans": [
                    "Over-applied paint",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why is it important to distinguish between surface corrosion and structural corrosion?",
        "ansGr": [
            {
                "ans": [
                    "Because structural corrosion may affect strength or integrity.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Because surface corrosion often requires part replacement.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Because surface corrosion often spreads faster than structural corrosion.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does the term \"nonferrous\" refer to in terms of metal composition?",
        "ansGr": [
            {
                "ans": [
                    "Metals with elements other than iron as their main constituent.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Metals that contain iron as a primary element.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Steel contains a high percentage of carbon.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the reasons for the limited use of copper in aircraft structures?",
        "ansGr": [
            {
                "ans": [
                    "Its great weight.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Its electrical conductivity.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Its resitance to corrosion.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following is a type of nickel alloy?",
        "ansGr": [
            {
                "ans": [
                    "Monel.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Conel",
                    "false"
                ]
            },
            {
                "ans": [
                    "Sonel.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does the 1xxx aluminum type stand for?",
        "ansGr": [
            {
                "ans": [
                    "Pure aluminum alloys",
                    "true"
                ]
            },
            {
                "ans": [
                    "Copper alloys",
                    "false"
                ]
            },
            {
                "ans": [
                    "Unused alloys",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the distinct groups of wrought aluminum alloys according to the system?",
        "ansGr": [
            {
                "ans": [
                    "Group 1xxx to Group 9xxx.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Series Axxx to Series Cxxx.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Class I to Class X.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What makes aluminum one of the most widely used metals in modern aircraft construction?",
        "ansGr": [
            {
                "ans": [
                    "Its high strength to weight ratio and ease of fabrication.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Its magnetic properties and resistance to heat.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Its high density and high electric conductivity.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What letter in the designation 2024-T3 indicates the strength of the aluminum alloy?",
        "ansGr": [
            {
                "ans": [
                    "T3",
                    "true"
                ]
            },
            {
                "ans": [
                    "20",
                    "false"
                ]
            },
            {
                "ans": [
                    "24",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the characteristics of titanium?",
        "ansGr": [
            {
                "ans": [
                    "Nonmagnetic.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Prone to corrosion.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Easily moldable.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "In aircraft, copper is primarily used in which of the following applications?",
        "ansGr": [
            {
                "ans": [
                    "Electrical systems.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Hydraulic systems.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Pneumatic systems.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the disadvantages of magnesium alloys when used in aircraft structures?",
        "ansGr": [
            {
                "ans": [
                    "Magnesium dust and fine chips are ignited easily.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Limited availability of raw materials.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Magnesium is challenging to alloy with other metals.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following describes the crystal types found in titanium and titanium alloys?",
        "ansGr": [
            {
                "ans": [
                    "A, B and C.",
                    "true"
                ]
            },
            {
                "ans": [
                    "1, 2 and 3.",
                    "false"
                ]
            },
            {
                "ans": [
                    "I, II and III.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following materials is not a metallic alloy?",
        "ansGr": [
            {
                "ans": [
                    "1350-H19",
                    "true"
                ]
            },
            {
                "ans": [
                    "2024-T4",
                    "false"
                ]
            },
            {
                "ans": [
                    "5052-H32",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the purpose of hardness testing in metal evaluation?",
        "ansGr": [
            {
                "ans": [
                    "To evaluate heat treatment results and check material properties",
                    "true"
                ]
            },
            {
                "ans": [
                    "To determine the shape of the metal part",
                    "false"
                ]
            },
            {
                "ans": [
                    "To measure the weight and chemical composition of the alloy",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What factor must be measured in order to determine the Brinell Hardness Number (BHN)?",
        "ansGr": [
            {
                "ans": [
                    "The diameter of the ball impression",
                    "true"
                ]
            },
            {
                "ans": [
                    "The time of applied load",
                    "false"
                ]
            },
            {
                "ans": [
                    "The depth of the indentation",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does the Rockwell hardness test measure to determine the hardness of a material?",
        "ansGr": [
            {
                "ans": [
                    "The depth of the penetrator’s impression under specific loads",
                    "true"
                ]
            },
            {
                "ans": [
                    "The diameter of the penetrator used",
                    "false"
                ]
            },
            {
                "ans": [
                    "The time required for material deformation",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is an advantage of using a Barcol hardness tester for aircraft maintenance?",
        "ansGr": [
            {
                "ans": [
                    "Accurate on hardened steel.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Portable for testing soft alloys.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Indenter can be ground if damaged.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How is the condition of the Barcol indenter point checked?",
        "ansGr": [
            {
                "ans": [
                    "By pressing it into the test disk and checking the dial reading",
                    "true"
                ]
            },
            {
                "ans": [
                    "By measuring its remaining length",
                    "false"
                ]
            },
            {
                "ans": [
                    "By visually inspecting it under a microscope",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When should the diamond penetrator be used on a Rockwell hardness tester?",
        "ansGr": [
            {
                "ans": [
                    "When testing hard materials or when hardness is unknown",
                    "true"
                ]
            },
            {
                "ans": [
                    "When testing known soft materials",
                    "false"
                ]
            },
            {
                "ans": [
                    "When the hardness reads below C-22",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "If a rivet shank appears joggled and the holes in the sheet are misaligned, this indicates:",
        "ansGr": [
            {
                "ans": [
                    "Shear failure",
                    "true"
                ]
            },
            {
                "ans": [
                    "Bearing failure",
                    "false"
                ]
            },
            {
                "ans": [
                    "Corrosion failure",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When repairing a damaged structural component on an aircraft, what is the appropriate procedure if the exact repair is not found in the SRM?",
        "ansGr": [
            {
                "ans": [
                    "Refer to a similar repair or assembly used by the same aircraft manufacturer",
                    "true"
                ]
            },
            {
                "ans": [
                    "Fabricate a new repair using standard workshop practices",
                    "false"
                ]
            },
            {
                "ans": [
                    "Use general repair instructions from a different aircraft type of similar size",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "If a weaker alloy is used for repair due to material availability, what should be done?",
        "ansGr": [
            {
                "ans": [
                    "Use a heavier gauge to match strength",
                    "true"
                ]
            },
            {
                "ans": [
                    "Reduce the repair area to minimize stress",
                    "false"
                ]
            },
            {
                "ans": [
                    "Use a lighter gauge to reduce weight",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Advantages for using composite materials are:",
        "ansGr": [
            {
                "ans": [
                    "High strength to weight ratio and corrosion resistance.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Great variety of materials, processes, and techniques.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Use new technology methods and expensive processing equipment",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What do you need to wear to protect your lungs fromtiny glass bubbles and fiber pieces?",
        "ansGr": [
            {
                "ans": [
                    "A respirator with dust filters.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A medical face mask.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A regular cloth mask.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the main forms of fiber reinforcements?",
        "ansGr": [
            {
                "ans": [
                    "Particles, whiskers, and fibers.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Whiskers, foams, and particles.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Films, tapes, and fibers.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Laminated structure with a core center is called:",
        "ansGr": [
            {
                "ans": [
                    "A sandwich structure",
                    "true"
                ]
            },
            {
                "ans": [
                    "A monolithic structure",
                    "false"
                ]
            },
            {
                "ans": [
                    "A honeycomb structure.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Applications of composites on aircraft include:",
        "ansGr": [
            {
                "ans": [
                    "Flight control surfaces.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Landing gear.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Air intake lip skin.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the primary load carrying element of the composite material?",
        "ansGr": [
            {
                "ans": [
                    "A fiber.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A matrix.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A filler.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What direction does 'warp' refer to in fabric?",
        "ansGr": [
            {
                "ans": [
                    "The longitudinal",
                    "true"
                ]
            },
            {
                "ans": [
                    "The horizontal",
                    "false"
                ]
            },
            {
                "ans": [
                    "The vertical.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Fibre weave strength is greatest in the direction of the …",
        "ansGr": [
            {
                "ans": [
                    "Warp.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Weft.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Bias.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which types of fibers are commonly used in the aviation industry?",
        "ansGr": [
            {
                "ans": [
                    "Fiberglass, Kevlar@, cacbon fibers, boron fibers, ceramic fibers, lightening protection fibers.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Fiberglass, Kevlar@, cacbon fibers, aramid fibers, ceramic fibers, lightening protection fibers.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Fiberglass, cacbon fibers, aramid fibers, graphite fibers, lightening protection fibers.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Kevlar® is:",
        "ansGr": [
            {
                "ans": [
                    "Aramid fibers.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Glass fibers.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Cabon fibers.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What color is fiberglass?",
        "ansGr": [
            {
                "ans": [
                    "A white color",
                    "true"
                ]
            },
            {
                "ans": [
                    "A natural yellow color",
                    "false"
                ]
            },
            {
                "ans": [
                    "A gray or black color.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of material is often used on the surface of an external composite component for lightning strike protection?",
        "ansGr": [
            {
                "ans": [
                    "Metal meshes",
                    "true"
                ]
            },
            {
                "ans": [
                    "Graphite cloth",
                    "false"
                ]
            },
            {
                "ans": [
                    "Aramid fibers",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Dry fiber is:",
        "ansGr": [
            {
                "ans": [
                    "The fiber material, such as carbon, glass, and Kevlar® have not been impregnated with a resin",
                    "true"
                ]
            },
            {
                "ans": [
                    "The fiber material is impregnated with a resin then stored in a freezer at a temperature below 0°F.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Dry fiber is a type of prepreg material which consists of a combination of a matrix and fiber reinforcement",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Curing temperature of epoxy resin is:",
        "ansGr": [
            {
                "ans": [
                    "Vary from room temperature to approximately 180°C",
                    "true"
                ]
            },
            {
                "ans": [
                    "Vary from approximately 4°C to room temperature.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Usually in excess of 290°C.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Prepreg materials must be stored:",
        "ansGr": [
            {
                "ans": [
                    "In a freezer at a temperature below -18°C.",
                    "true"
                ]
            },
            {
                "ans": [
                    "For a long time at room temperature",
                    "false"
                ]
            },
            {
                "ans": [
                    "In a refrigerator at a temperature below 4°C.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Adhesive are included:",
        "ansGr": [
            {
                "ans": [
                    "Film adhesive, paste adhesive, foam adhesive.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Film adhesive, epoxy adhesive, paste adhesive.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Patch adhesive, foam adhesive, paste adhesive.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does a sandwich structure consist of?",
        "ansGr": [
            {
                "ans": [
                    "Its simplest form of two relatively thin, parallel face sheets bonded to and separated by a relatively thick, lightweight core.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Three or more layers of resin impregnated cloths \"wet laminated\" together to form a solid sheet facing or molded shape.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Glass cloths impregnated with a polyester or a combination of nylon and phenolic resins.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which is the most common core material used for aircraft honeycomb structures?",
        "ansGr": [
            {
                "ans": [
                    "Aramid paper",
                    "true"
                ]
            },
            {
                "ans": [
                    "Carbon",
                    "false"
                ]
            },
            {
                "ans": [
                    "Ceramics",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which types of core material are commonly used in the aviation industry?",
        "ansGr": [
            {
                "ans": [
                    "Honeycomb, foam, balsa wood.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Honeycomb, fiberglass, film.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Honeycomb, film, foam.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which forms are transparent plastics manufactured in?",
        "ansGr": [
            {
                "ans": [
                    "Monolithic and laminated",
                    "true"
                ]
            },
            {
                "ans": [
                    "Solid and liquid",
                    "false"
                ]
            },
            {
                "ans": [
                    "Coated and uncoated",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which type of material is reinforced plastic?",
        "ansGr": [
            {
                "ans": [
                    "A thermosetting material.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A thermoplastic material.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A thermochromic material.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the main classifications of plastics?",
        "ansGr": [
            {
                "ans": [
                    "Thermoplastics, thermosetting plastics.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Natural plastics, synthetic plastics.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Rigid plastics, flexible plastics.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the characteristics of thermoplastic materials?",
        "ansGr": [
            {
                "ans": [
                    "Soften when heated and harden when cooled.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Harden upon heating, and reheating has no softening effect.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Cannot be reshaped once being fully cured by the application of heat.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the characteristics of thermosetting materials?",
        "ansGr": [
            {
                "ans": [
                    "Harden upon heating, and reheating has no softening effect",
                    "true"
                ]
            },
            {
                "ans": [
                    "Can be heated until soft, and then formed into the desired shape.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Can be reheated and reshaped any number of times without changing the chemical composition of the materials",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the main purpose of rubber in aircraft?",
        "ansGr": [
            {
                "ans": [
                    "To prevent the entrance of dirt, water, or air, and to prevent the loss of fluids, gases, or air.",
                    "true"
                ]
            },
            {
                "ans": [
                    "To increase the strength of the aircraft structure and the aerodynamic performance of the aircraft.",
                    "false"
                ]
            },
            {
                "ans": [
                    "To protect probes and antennas of aircraft from external damage.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which type of rubber is commonly used in aircraft?",
        "ansGr": [
            {
                "ans": [
                    "Synthetic rubber.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Natural rubber.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Recycled rubber.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the main factor that affects the working life of mixed sealant?",
        "ansGr": [
            {
                "ans": [
                    "The class of sealant.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The base compound.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The accelerator.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the main factors that affects the curing rate of mixed sealant?",
        "ansGr": [
            {
                "ans": [
                    "Temperature and humidity.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Color of the sealant.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The size of the container.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What should be avoided when mixing sealant?",
        "ansGr": [
            {
                "ans": [
                    "Overly rapid or prolonged stirring and prevent entrapment of air in the mixture.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Carefully weighed in accordance with the sealant manufacturer’s recommendations",
                    "false"
                ]
            },
            {
                "ans": [
                    "Test by smearing a small portion on a clean, flat metal or glass surface",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the term 'tack-free'?",
        "ansGr": [
            {
                "ans": [
                    "The point at which a sheet of cellophane pressed onto the sealant will no longer adhere",
                    "true"
                ]
            },
            {
                "ans": [
                    "A sealant is cured enough to permit a sealed joint to be pressure tested",
                    "false"
                ]
            },
            {
                "ans": [
                    "A sealant remains suitable for application after it has been mixed",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the characteristic of an isotropic material?",
        "ansGr": [
            {
                "ans": [
                    "It has uniform properties in all directions.",
                    "true"
                ]
            },
            {
                "ans": [
                    "It has varying properties in different directions.",
                    "false"
                ]
            },
            {
                "ans": [
                    "It has trong and stiff in the direction of the fibers.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the characteristic of an anisotropic material?",
        "ansGr": [
            {
                "ans": [
                    "It has predominant mechanical properties in one direction.",
                    "true"
                ]
            },
            {
                "ans": [
                    "It has uniform properties in all directions.",
                    "false"
                ]
            },
            {
                "ans": [
                    "It is independent of the axis of testing.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the role of a fiber in composite material?",
        "ansGr": [
            {
                "ans": [
                    "To act as the primary load-carrying element.",
                    "true"
                ]
            },
            {
                "ans": [
                    "To enhance thermal conductivity.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Supports and bonds anisotropic material together.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the role of a matrix in composite material?",
        "ansGr": [
            {
                "ans": [
                    "Supports and bonds anisotropic material together.",
                    "true"
                ]
            },
            {
                "ans": [
                    "To act as the primary load-carrying element.",
                    "false"
                ]
            },
            {
                "ans": [
                    "To enhance thermal conductivity.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "A plain weave fabric is:",
        "ansGr": [
            {
                "ans": [
                    "A bidirectional ply orientation.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A unidirectional ply orientation.",
                    "false"
                ]
            },
            {
                "ans": [
                    "An one direction ply orientation.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "If the warp clock is not available on the fabric, the orientation is defaulted to zero as:",
        "ansGr": [
            {
                "ans": [
                    "The fabric comes off the roll.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The width of the fabric across.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The clockwise of the fabric.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which types of fiberglass are commonly used for structure on aircraft?",
        "ansGr": [
            {
                "ans": [
                    "E-glass and S-glass.",
                    "true"
                ]
            },
            {
                "ans": [
                    "C-glass and F-glass.",
                    "false"
                ]
            },
            {
                "ans": [
                    "D-glass and T-glass.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is characteristic of S-glass fibers?",
        "ansGr": [
            {
                "ans": [
                    "Has a higher strength than E-glass.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Has high resistance to current flow.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Has high resistance to impact damage.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the characteristics of aramid fibers?",
        "ansGr": [
            {
                "ans": [
                    "General weakness in compression, hygroscopy and fuzz easily.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Causing galvanic corrosion when used with metallic fasteners and structures.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Difficult to use if the parent material surface has a contoured shape.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the disadvantages of carbon fibers?",
        "ansGr": [
            {
                "ans": [
                    "Causing galvanic corrosion when used with metallic fasteners and structures.",
                    "true"
                ]
            },
            {
                "ans": [
                    "General weakness in compression, hygroscopy and fuzz easily.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Difficult to use if the parent material surface has a contoured shape.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the characteristics of cabon fibers?",
        "ansGr": [
            {
                "ans": [
                    "Very stiff and strong.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Light weight, strong, and tough.",
                    "false"
                ]
            },
            {
                "ans": [
                    "High resistance to current flow.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Three curing stages of resins are:",
        "ansGr": [
            {
                "ans": [
                    "A stage: The components of the resin (base material and hardener) have been mixed but the chemical reaction has not started; B stage: The components of the resin have been mixed and the chemical reaction has started; C stage: The resin is fully cured.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A stage: The components of the resin (base material and hardener) have been separated; B stage: The components of the resin have been mixed but the chemical reaction has not started; C stage: The chemical reaction has started and the resin is fully cured.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A stage: The components of the resin have been mixed but the chemical reaction has not started; B stage: The mixed resin begins to soften and flow as the temperature is increased; C stage: The chemical reaction has started and the resin is fully cured.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the prepreg material?",
        "ansGr": [
            {
                "ans": [
                    "A combination of a matrix and fiber reinforcement which the resin has been advanced to a B stage level of cure for better handling characteristics.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Fibers without any matrix components are impregnated with a resin just before the repair work starts.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A combination of a resin and fiber reinforcement which the resin remains in a low-viscosity stage, allowing for easier application in various conditions.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Comparison between dry fiber material and prepreg material:",
        "ansGr": [
            {
                "ans": [
                    "The process is messy and reinforcement properties are less than prepreg material properties.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Dry fiber materials must be stored in a freezer at a temperature below 0°F to retard the curing process.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The resin is then no longer in a low-viscosity stage, but has been advanced to a B stage level of cure for better handling characteristics.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the disadvantages of paste adhesives compared to film adhesives?",
        "ansGr": [
            {
                "ans": [
                    "The bond line thickness is hard to control.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Difficult to apply in some places.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Only be stored at room temperature.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which adhesive can be stored at room temperature?",
        "ansGr": [
            {
                "ans": [
                    "Paste adhesive.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Film adhesive.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Foam adhesive.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the primary role of the core in composite structures?",
        "ansGr": [
            {
                "ans": [
                    "Supports the face sheets against buckling and resists out-of-plane shear loads.",
                    "true"
                ]
            },
            {
                "ans": [
                    "It allows for increased flexibility, enabling them to bend.",
                    "false"
                ]
            },
            {
                "ans": [
                    "It has high impact resistance, making it suitable for areas prone to damage.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What properties must the core material have to be effective in composite structures?",
        "ansGr": [
            {
                "ans": [
                    "High shear strength and compression stiffness.",
                    "true"
                ]
            },
            {
                "ans": [
                    "High thermal conductivity and light weight.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Low cost and ease of production.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Carbon fiber face sheets cannot be used with:",
        "ansGr": [
            {
                "ans": [
                    "Aluminum honeycomb core material.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Titanium honeycomb core material.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Aramid paper honeycomb core material.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What shape are honeycomb core cells typically used for aerospace applications?",
        "ansGr": [
            {
                "ans": [
                    "Hexagonal",
                    "true"
                ]
            },
            {
                "ans": [
                    "Circular",
                    "false"
                ]
            },
            {
                "ans": [
                    "Triangular",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Ribbon direction of honeycomb core is:",
        "ansGr": [
            {
                "ans": [
                    "The direction parallel to the sheets bonded at specific locations.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The direction perpendicular to the sheets bonded at specific locations.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The direction along the length of the cell, known as thickness direction.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following core types is used in panels with complex curves?",
        "ansGr": [
            {
                "ans": [
                    "Bellshaped core",
                    "true"
                ]
            },
            {
                "ans": [
                    "Overexpanded core",
                    "false"
                ]
            },
            {
                "ans": [
                    "Bisected hexagonal core",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is an advantage of using a honeycomb construction?",
        "ansGr": [
            {
                "ans": [
                    "Increasing the core thickness greatly increases stiffness with minimal weight increase.",
                    "true"
                ]
            },
            {
                "ans": [
                    "It significantly increases weight while improving stiffness.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Honeycomb construction provides better thermal insulation compared to solid structures.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following is NOT a category of durability problems experienced by thin face sheets in honeycomb structures?",
        "ansGr": [
            {
                "ans": [
                    "Corrosion",
                    "true"
                ]
            },
            {
                "ans": [
                    "Liquid ingression",
                    "false"
                ]
            },
            {
                "ans": [
                    "Erosion",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following sounds is indicated with a discrepant area when performing tap testing on a structure?",
        "ansGr": [
            {
                "ans": [
                    "A dull or thud- like sound.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A clear, ringing sound.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A sharp, metallic sound.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which type of sound wave is used in ultrasonic inspection?",
        "ansGr": [
            {
                "ans": [
                    "A high-frequency sound wave.",
                    "true"
                ]
            },
            {
                "ans": [
                    "An audible wave.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A low-frequency sound wave.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Delamination, resin starved areas, resin rich areas, blisters, air bubbles, wrinkles, voids, thermal decomposition are included in",
        "ansGr": [
            {
                "ans": [
                    "Manufacturing defects.",
                    "true"
                ]
            },
            {
                "ans": [
                    "In-service defects.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Not permited defects.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is considered the optimum fiber to resin ratio in composite materials?",
        "ansGr": [
            {
                "ans": [
                    "60:40.",
                    "true"
                ]
            },
            {
                "ans": [
                    "50:50.",
                    "false"
                ]
            },
            {
                "ans": [
                    "80:20.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Where does delaminations form?",
        "ansGr": [
            {
                "ans": [
                    "On the interface between the layers in the laminate",
                    "true"
                ]
            },
            {
                "ans": [
                    "Production nonadhesion along the bondline between two elements.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Inside the honeycomb core of the sandwwich structure.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Where does debonds form?",
        "ansGr": [
            {
                "ans": [
                    "Production nonadhesion along the bondline between two elements.",
                    "true"
                ]
            },
            {
                "ans": [
                    "On the interface between the layers in the laminate.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Inside the honeycomb core of the sandwwich structure.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Environmental degradation, impact damage, fatigue, cracks from local overload, de-bonding, delamination, fiber fracturing, erosion are included in",
        "ansGr": [
            {
                "ans": [
                    "In-service defects.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Manufacturing defects.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Not permited defects.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the methods for removing Skydrol (hydraulic fluid) from a saturated sandwich part?",
        "ansGr": [
            {
                "ans": [
                    "Removal of contaminated core and adhesive as part of the repair.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Place a damaged but unrepaired part in the autoclave to dry.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Clean with solvents such as acetone or isopropyl alcohol.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which durability problems are commonly experienced by honeycomb core structures, such as wing spoilers, fairings, flight controls and landing gear doors?",
        "ansGr": [
            {
                "ans": [
                    "Low resistance to impact, liquid ingression, and erosion.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Improper cure or processing, contamination and tool drops.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Substandard material, mislocation of holes or details.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "If all moisture isn't removed from the part, what can happen during the curing process?",
        "ansGr": [
            {
                "ans": [
                    "Disbonding may occur at the skin-to-core interface wherever trapped water resides.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The part will cure faster because repair material cure at temperatures above the boiling point of water.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Water can increase the part's flexibility, making it easier to handle during repair.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How are composite aircraft parts typically treated to avoid erosion?",
        "ansGr": [
            {
                "ans": [
                    "They are coated with anti-erosion materials or covered by steel sheets.",
                    "true"
                ]
            },
            {
                "ans": [
                    "They are reinforced with additional layers of composite.",
                    "false"
                ]
            },
            {
                "ans": [
                    "They are left untreated as composites are naturally erosion-resistant.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How can we protect external aircraft composite structures from UV light?",
        "ansGr": [
            {
                "ans": [
                    "Apply special UV primers and paints.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Cover by regular fabric without any UV protection.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Chrome plating on the surface of composite structures.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which defects cannot be detected with a visual inspection?",
        "ansGr": [
            {
                "ans": [
                    "Internal anomalies, such as delaminations, disbonds, and water ingestion.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Resin starvation, resin richness and wrinkles or chip the composite surface.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Dent, penetrate, abrade, lighting strike, overheat and burns.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which defects can be detected with a visual inspection?",
        "ansGr": [
            {
                "ans": [
                    "Resin starvation, resin richness, wrinkles, ply bridging, discoloration",
                    "true"
                ]
            },
            {
                "ans": [
                    "Delaminations, disbonds, and matrix crazing, voids in foam adhesive joints.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Internal anomalies, such as delaminations in the corners, crushed core, blown core, water in core cells.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which tool is commonly used for audible sonic testing?",
        "ansGr": [
            {
                "ans": [
                    "Tap hammer.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Bond tester.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Pulse echo ultrasonic test equipment.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which type of saw is considered the best for straight cuts in transparent plastics?",
        "ansGr": [
            {
                "ans": [
                    "Circular saws.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Band saws.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Handsaw.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why are electric motors not recommended for use with composite materials?",
        "ansGr": [
            {
                "ans": [
                    "Carbon is conductive and can cause an electrical short circuit.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Carbon dust wears the bearings.",
                    "false"
                ]
            },
            {
                "ans": [
                    "They are not as strong as air driven tools.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Peel plies are used to:",
        "ansGr": [
            {
                "ans": [
                    "Create a clean surface for bonding purposes.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Seal the vacuum bag to the part or tool.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Creates a path for the air and volatiles to escape from the repair.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "The bleeder ply is used to:",
        "ansGr": [
            {
                "ans": [
                    "Creates a path for the air and volatiles to escape from the repair.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Provide a path for air to get out of the vacuum bag.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Provides a tough layer between the repair and the atmosphere.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following lists the correct order of the elevated temperature cure cycle?",
        "ansGr": [
            {
                "ans": [
                    "Ramp up → Hold or soak → Cool down.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Hold or soak → Ramp up → Cool down.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Ramp up → Cool down → Hold or soak.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the three types of repairs mentioned in the damage classification process?",
        "ansGr": [
            {
                "ans": [
                    "Temporary repair, interim repair, permanent repair.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Momentary repair, inteval repair, restore repair",
                    "false"
                ]
            },
            {
                "ans": [
                    "Wet layup repair, prepreg repair, core repair.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What requirements should be followed when drilling composite materials?",
        "ansGr": [
            {
                "ans": [
                    "High speed and low feed rate.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Low speed and low feed rate.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Low speed and hight feed rate.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Perforated parting film is used to:",
        "ansGr": [
            {
                "ans": [
                    "Allow air and volatiles out of the repair, and prevents the bleeder ply from sticking to the part or repair.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Prevent the resins from bleeding through and damaging the heat blanket or caul plate if they are used.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Provides a tough layer between the repair and the atmosphere.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following devices are heat sources?",
        "ansGr": [
            {
                "ans": [
                    "Oven, heat blanket, heat lamp, hot air system.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Autoclave, heat bonder and heat press forming.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Autoclave, heat bonder and thermocouples.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "To provide a path for air to get out of the vacuum bag, the breather must contact:",
        "ansGr": [
            {
                "ans": [
                    "The bleeder.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The peel ply.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The repair plies.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does TCs (Thermocouples) consist of?",
        "ansGr": [
            {
                "ans": [
                    "A wire with two leads of dissimilar metals that are joined at one end.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A wire with two leads made of similar metals connected at both ends.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A wire made of a single metal lead connected at both ends",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following method is not a lay-up repair method?",
        "ansGr": [
            {
                "ans": [
                    "Using the same dimension plies taper layup in the sequence, then finished with an extra outer layer onto the sound laminate for some distance.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Place the smallest ply first taper layup in the sequence, followed by successively bigger layers.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Apply the largest ply first in the layup sequence, followed by successively smaller layers, and then finished with an extra outer layer.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is crucial during a repair operation of composite materials?",
        "ansGr": [
            {
                "ans": [
                    "Replace each damaged ply with a ply of the same material and orientation or an approved substitute.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Replace each damaged ply with a ply of stronger material to ensure it is restored to its original condition.the damage .",
                    "false"
                ]
            },
            {
                "ans": [
                    "The damage plies may be replaced by thin alluminum sheets to ensure resistance to external impacts.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What material is often used to repair Kevlar®?",
        "ansGr": [
            {
                "ans": [
                    "Fiberglass",
                    "true"
                ]
            },
            {
                "ans": [
                    "Carbon fiber",
                    "false"
                ]
            },
            {
                "ans": [
                    "Wood",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What should be done when performing core replacement and repair on one or both face plates?",
        "ansGr": [
            {
                "ans": [
                    "Water needs to be removed from the core before the part is repaired.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Ensure that you fill epoxy resin to all damaged core cells.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Layup plies cover the damage after removing the damaged core.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How is resin injected into the delamination area using the resin injection repair method?",
        "ansGr": [
            {
                "ans": [
                    "Through one hole until it flows out the other hole.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Through one hole only.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Through separate holes that are not connected to each other.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why are the skins of radomes made thin?",
        "ansGr": [
            {
                "ans": [
                    "To prevent blockage of radar signals",
                    "true"
                ]
            },
            {
                "ans": [
                    "To make repairs easy in case of a bird strike.",
                    "false"
                ]
            },
            {
                "ans": [
                    "To avoid lightning strikes.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why should winshields not be rubbed with a dry cloth?",
        "ansGr": [
            {
                "ans": [
                    "It is likely to cause scratches and build up an electrostatic charge.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The dry cloth must be soaked in gasoline, benzene, acetone or window cleaning sprays.",
                    "false"
                ]
            },
            {
                "ans": [
                    "It is harder to remove dirt and grease than with a soft cloth.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "The 90° to zero of fibers is:",
        "ansGr": [
            {
                "ans": [
                    "The fill direction.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The warp direction.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The load direction.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why must the breather contact the bleeder?",
        "ansGr": [
            {
                "ans": [
                    "To ensure proper airflow and allow for effective pressure regulation.",
                    "true"
                ]
            },
            {
                "ans": [
                    "To prevent the resins from bleeding through and damaging the heat blanket or caul plate.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Excess resin that flows through the bleeder is collected in the breather.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of drill bit should not be used to drill composite materials?",
        "ansGr": [
            {
                "ans": [
                    "Standard high-speed steel (HSS) drill bits.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Diamondcoated material drill bits.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Solid carbide drill bits.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of fastener is least used for composite structures?",
        "ansGr": [
            {
                "ans": [
                    "Solid rivet.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Blind rivets.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Lock bolts fastener.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of repair must be removed and replaced with another type of repair?",
        "ansGr": [
            {
                "ans": [
                    "A temporary repair",
                    "true"
                ]
            },
            {
                "ans": [
                    "An interim repair",
                    "false"
                ]
            },
            {
                "ans": [
                    "A permanent repair",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which types of aircraft commonly use wood in their construction?",
        "ansGr": [
            {
                "ans": [
                    "Classic aircraft.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Military fighter jets.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Modern commercial aircraft.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which type of wood is commonly used in aircraft construction?",
        "ansGr": [
            {
                "ans": [
                    "Solid wood.",
                    "true"
                ]
            },
            {
                "ans": [
                    "MDF (Medium Density Fiberboard).",
                    "false"
                ]
            },
            {
                "ans": [
                    "Redwood.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How can wood decay and dry rot be easily detected?",
        "ansGr": [
            {
                "ans": [
                    "By checking for dark discolorations or softening of the wood.",
                    "true"
                ]
            },
            {
                "ans": [
                    "By examining the grain pattern of the wood.",
                    "false"
                ]
            },
            {
                "ans": [
                    "By using a through-transmission Ultrasonic water yoke testing.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the conditions for inspecting an aircraft constructed or comprised of wood components?",
        "ansGr": [
            {
                "ans": [
                    "The aircraft should be placed in a dry, well ventilated hanger.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The inspection is carried out outdoors with natural sunlight.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The inspection can be conducted in a damp environment.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the primary advantage of using fabric covering on an aircraft?",
        "ansGr": [
            {
                "ans": [
                    "Light weight.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Durability.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Flammability.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the disadvantages of fabric coverings?",
        "ansGr": [
            {
                "ans": [
                    "Flammability and lack of durability.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Weather resistance and strength.",
                    "false"
                ]
            },
            {
                "ans": [
                    "High cost and weight.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of fabric covering is considered the standard for U.S. certificated aircraft today?",
        "ansGr": [
            {
                "ans": [
                    "Polyester",
                    "true"
                ]
            },
            {
                "ans": [
                    "Cotton",
                    "false"
                ]
            },
            {
                "ans": [
                    "Linen",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "The process of recovering a fabric aircraft is:",
        "ansGr": [
            {
                "ans": [
                    "A major repair.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A minor repair.",
                    "false"
                ]
            },
            {
                "ans": [
                    "An unnecessary repairs.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Corrosion is defined as:",
        "ansGr": [
            {
                "ans": [
                    "Electrochemical deterioration of a metal due to environmental reaction",
                    "true"
                ]
            },
            {
                "ans": [
                    "Mechanical deformation of a metal due to overload",
                    "false"
                ]
            },
            {
                "ans": [
                    "Thermal expansion of a metal due to temperature change",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following is an example of slow corrosion?",
        "ansGr": [
            {
                "ans": [
                    "Pitting corrosion",
                    "true"
                ]
            },
            {
                "ans": [
                    "Environmental embrittlement",
                    "false"
                ]
            },
            {
                "ans": [
                    "Stress corrosion cracking",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Corrosion converts metal into:",
        "ansGr": [
            {
                "ans": [
                    "A non-metallic compound",
                    "true"
                ]
            },
            {
                "ans": [
                    "A conductive oxide layer",
                    "false"
                ]
            },
            {
                "ans": [
                    "A harder metallic alloy",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following is required for electrochemical corrosion?",
        "ansGr": [
            {
                "ans": [
                    "An anode, a cathode, an electrolyte, and electrical contact",
                    "true"
                ]
            },
            {
                "ans": [
                    "Heat, vibration, lubrication, and pressure",
                    "false"
                ]
            },
            {
                "ans": [
                    "Two dissimilar metals in electrical contact exposed to oxygen",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Metals such as magnesium and aluminum are described as:",
        "ansGr": [
            {
                "ans": [
                    "Active metals that corrode easily",
                    "true"
                ]
            },
            {
                "ans": [
                    "Inert metals that do not react",
                    "false"
                ]
            },
            {
                "ans": [
                    "Noble metals that resist corrosion",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "High temperature environments increase corrosion because they:",
        "ansGr": [
            {
                "ans": [
                    "Accelerate chemical reactions",
                    "true"
                ]
            },
            {
                "ans": [
                    "Decrease moisture content in the air",
                    "false"
                ]
            },
            {
                "ans": [
                    "Reduce chemical reaction rates",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Corrosion will spread more rapidly when metals are exposed to",
        "ansGr": [
            {
                "ans": [
                    "Higher temperature",
                    "true"
                ]
            },
            {
                "ans": [
                    "Cold climates",
                    "false"
                ]
            },
            {
                "ans": [
                    "Dry climates",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following groups represents the most common corrosive agents?",
        "ansGr": [
            {
                "ans": [
                    "Acids, alkalies, and salts",
                    "true"
                ]
            },
            {
                "ans": [
                    "Oils, fuels, and greases",
                    "false"
                ]
            },
            {
                "ans": [
                    "Oxygen, nitrogen, and hydrogen",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "One way fungi contribute to corrosion is by:",
        "ansGr": [
            {
                "ans": [
                    "Retaining moisture on the material surface",
                    "true"
                ]
            },
            {
                "ans": [
                    "Eliminating oxygen around the metal",
                    "false"
                ]
            },
            {
                "ans": [
                    "Preventing chemical reactions on the surface",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why is classification of corrosion by physical appearance considered a convenient method of identification?",
        "ansGr": [
            {
                "ans": [
                    "Because all corrosive attacks begin on the surface of the metal",
                    "true"
                ]
            },
            {
                "ans": [
                    "Because corrosion types can be determined by chemical composition",
                    "false"
                ]
            },
            {
                "ans": [
                    "Because corrosion severity depends only on environmental conditions",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which form of corrosion significantly reduces the endurance limit of a metal subjected to cyclic stress?",
        "ansGr": [
            {
                "ans": [
                    "Corrosion fatigue",
                    "true"
                ]
            },
            {
                "ans": [
                    "Stress corrosion cracking",
                    "false"
                ]
            },
            {
                "ans": [
                    "Inter-granular corrosion",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Discoloration or general dulling of metal caused by exposure to elevated temperatures should be classified as:",
        "ansGr": [
            {
                "ans": [
                    "A thermal effect rather than corrosion",
                    "true"
                ]
            },
            {
                "ans": [
                    "General surface corrosion",
                    "false"
                ]
            },
            {
                "ans": [
                    "Uniform chemical surface attack",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "A white or gray powdery deposit that blotches the surface, and reveals tiny holes after cleaning, is characteristic of:",
        "ansGr": [
            {
                "ans": [
                    "Pitting corrosion",
                    "true"
                ]
            },
            {
                "ans": [
                    "Heat discoloration",
                    "false"
                ]
            },
            {
                "ans": [
                    "General surface corrosion",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why can corrosion occur between identical metals in a crevice?",
        "ansGr": [
            {
                "ans": [
                    "Because different local oxygen concentrations create an electrochemical potential difference",
                    "true"
                ]
            },
            {
                "ans": [
                    "Because identical metals cannot form stable oxide films",
                    "false"
                ]
            },
            {
                "ans": [
                    "Because variations in metal ion concentration establish anodic and cathodic areas",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Filiform corrosion is best described as:",
        "ansGr": [
            {
                "ans": [
                    "An oxygen concentration cell under organic coatings",
                    "true"
                ]
            },
            {
                "ans": [
                    "Galvanic corrosion between dissimilar metals",
                    "false"
                ]
            },
            {
                "ans": [
                    "Uniform surface corrosion at elevated temperatures",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "If filiform corrosion is not removed and treated, it may lead to:",
        "ansGr": [
            {
                "ans": [
                    "Intergranular corrosion",
                    "true"
                ]
            },
            {
                "ans": [
                    "Stress corrosion cracking",
                    "false"
                ]
            },
            {
                "ans": [
                    "Uniform etch corrosion",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Inter-granular corrosion primarily affects:",
        "ansGr": [
            {
                "ans": [
                    "The grain boundaries of an alloy",
                    "true"
                ]
            },
            {
                "ans": [
                    "The entire exposed metal surface",
                    "false"
                ]
            },
            {
                "ans": [
                    "Areas subjected to mechanical wear",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which type of corrosion is described as an advanced stage of inter-granular corrosion that causes surface lifting?",
        "ansGr": [
            {
                "ans": [
                    "Exfoliation corrosion",
                    "true"
                ]
            },
            {
                "ans": [
                    "Pitting corrosion",
                    "false"
                ]
            },
            {
                "ans": [
                    "Filiform corrosion",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following standards is not an international standard for fasteners?",
        "ansGr": [
            {
                "ans": [
                    "ICAO - The International Civil Aviation Organization",
                    "true"
                ]
            },
            {
                "ans": [
                    "ISO - International Organization for Standardization.",
                    "false"
                ]
            },
            {
                "ans": [
                    "SAE - Society of Automotive Engineers.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How does a screw usually stay in place when fastening materials?",
        "ansGr": [
            {
                "ans": [
                    "By threading into the material",
                    "true"
                ]
            },
            {
                "ans": [
                    "By being welded",
                    "false"
                ]
            },
            {
                "ans": [
                    "By using glue",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does a bolt usually require to function properly?",
        "ansGr": [
            {
                "ans": [
                    "Nut.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Screw.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Rivet",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How is the length of a countersunk screw measured?",
        "ansGr": [
            {
                "ans": [
                    "From the top of the head.",
                    "true"
                ]
            },
            {
                "ans": [
                    "From the bottom of the head.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Length of the thread.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does the term \"aircraft hardware\" refer to in aviation?",
        "ansGr": [
            {
                "ans": [
                    "Fasteners and small items used in manufacturing and repair.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Electronic and electrical devices installed in aircraft.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Materials used in the construction of the main components of an aircraft.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Threaded fasteners and rivets are usually identified by which of the following standards?",
        "ansGr": [
            {
                "ans": [
                    "AN, NAS, MS.",
                    "true"
                ]
            },
            {
                "ans": [
                    "ISO, NAT, IEE",
                    "false"
                ]
            },
            {
                "ans": [
                    "TDS, DIN, JIS",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "A screw must not be used instead of a bolt in a load-bearing aircraft structure because:",
        "ansGr": [
            {
                "ans": [
                    "Screws generally have lower strength and lack a defined grip section.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Screws are made of lighter materials that cannot be torqued properly.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Screws are more prone to corrosion than bolts.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How can aircraft nuts usually be identified?",
        "ansGr": [
            {
                "ans": [
                    "By their characteristic metallic luster or color.",
                    "true"
                ]
            },
            {
                "ans": [
                    "By their identifying marking.",
                    "false"
                ]
            },
            {
                "ans": [
                    "By the lettering that appears on nuts.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How can aircraft bolts typically be identified?",
        "ansGr": [
            {
                "ans": [
                    "By the code markings on the bolt heads.",
                    "true"
                ]
            },
            {
                "ans": [
                    "By the number of threads along its shank.",
                    "false"
                ]
            },
            {
                "ans": [
                    "By the nut installed with the bolts.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the purpose of a washer?",
        "ansGr": [
            {
                "ans": [
                    "Prevents mechanical damage to the material.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Prevents erosion of the structural members.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Increase the grip length of the bolt.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "If internal threads are damaged, what is one common method of repair?",
        "ansGr": [
            {
                "ans": [
                    "Replacement helicoils.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Applying lubricant.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Polishing the threads.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When the applied torque reaches the torque value indicated on the handle setting, the handle will …",
        "ansGr": [
            {
                "ans": [
                    "Automatically release.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Lock.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Tighten further.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which screw type has the same strength as bolts of the same size?",
        "ansGr": [
            {
                "ans": [
                    "Structural screws.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Machine screws.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Self-tapping screws.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Self-tapping screws are normally used for:",
        "ansGr": [
            {
                "ans": [
                    "Attaching lighter parts",
                    "true"
                ]
            },
            {
                "ans": [
                    "Replacing high-strength structural bolts",
                    "false"
                ]
            },
            {
                "ans": [
                    "Securing primary load-bearing structures",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which group of screws includes most types used for general repair work?",
        "ansGr": [
            {
                "ans": [
                    "Machine screws",
                    "true"
                ]
            },
            {
                "ans": [
                    "Drive screws",
                    "false"
                ]
            },
            {
                "ans": [
                    "Structural screws",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "In terms of strength, lockbolts are:",
        "ansGr": [
            {
                "ans": [
                    "Equal in strength to standard bolts",
                    "true"
                ]
            },
            {
                "ans": [
                    "Stronger than all types of structural bolts",
                    "false"
                ]
            },
            {
                "ans": [
                    "Weaker than standard bolts",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the correct method to remove a standard stud from a tapped hole without damaging the threads?",
        "ansGr": [
            {
                "ans": [
                    "Lock two nuts together and use two spanners to turn the stud out",
                    "true"
                ]
            },
            {
                "ans": [
                    "Drill into the center of the stud and extract it using a screw extractor",
                    "false"
                ]
            },
            {
                "ans": [
                    "Cut a slot in the stud and remove it using a flat-head screwdriver",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the primary function of a dowel pin in aircraft engine assemblies?",
        "ansGr": [
            {
                "ans": [
                    "To align adjoining parts with high precision",
                    "true"
                ]
            },
            {
                "ans": [
                    "To absorb vibration between two joined components",
                    "false"
                ]
            },
            {
                "ans": [
                    "To prevent bolts from loosening during engine operation",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the main disadvantage of lockbolt installations?",
        "ansGr": [
            {
                "ans": [
                    "They are not easily removable compared to nuts and bolts",
                    "true"
                ]
            },
            {
                "ans": [
                    "They do not conform to Military Standards",
                    "false"
                ]
            },
            {
                "ans": [
                    "They are heavier than standard bolts",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How is the required bolt grip range determined for an application?",
        "ansGr": [
            {
                "ans": [
                    "By measuring the material thickness through the hole with a hook scale",
                    "true"
                ]
            },
            {
                "ans": [
                    "By measuring the bolt diameter only",
                    "false"
                ]
            },
            {
                "ans": [
                    "By checking the torque value in the maintenance manual",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Aircraft nuts are generally classified into which two groups?",
        "ansGr": [
            {
                "ans": [
                    "Non-self-locking and self-locking nuts",
                    "true"
                ]
            },
            {
                "ans": [
                    "Steel and aluminum nuts",
                    "false"
                ]
            },
            {
                "ans": [
                    "Structural and non-structural nuts",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How are non-self-locking nuts secured in an aircraft installation?",
        "ansGr": [
            {
                "ans": [
                    "By using external locking devices such as cotter pins or safety wire",
                    "true"
                ]
            },
            {
                "ans": [
                    "By increasing the tightening torque",
                    "false"
                ]
            },
            {
                "ans": [
                    "By an integral locking feature within the nut",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What distinguishes a self-locking nut from a non-self-locking nut?",
        "ansGr": [
            {
                "ans": [
                    "It contains the locking feature as an integral part",
                    "true"
                ]
            },
            {
                "ans": [
                    "It is only used in non-structural applications",
                    "false"
                ]
            },
            {
                "ans": [
                    "It requires a cotter pin for installation",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How do screws generally differ from bolts in aircraft applications?",
        "ansGr": [
            {
                "ans": [
                    "Screws are made of lower strength materials and accept a screwdriver.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Screws require precise torque wrench settings for proper installation.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Screws have tighter thread fit and are stronger than bolts.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the main purpose of safetying fasteners in aircraft?",
        "ansGr": [
            {
                "ans": [
                    "To prevent loosening due to vibration.",
                    "true"
                ]
            },
            {
                "ans": [
                    "To ensure fasteners remain torqued over time.",
                    "false"
                ]
            },
            {
                "ans": [
                    "To make assembly easier and faster.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "In which type of load application are pins primarily used in aircraft structures?",
        "ansGr": [
            {
                "ans": [
                    "Shear.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Tension.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Torsion.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the maximum recommended number of widely spaced bolts to be safety wired together in a series using the double twist method?",
        "ansGr": [
            {
                "ans": [
                    "3",
                    "true"
                ]
            },
            {
                "ans": [
                    "5",
                    "false"
                ]
            },
            {
                "ans": [
                    "10",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the main principle behind the use of safety wire?",
        "ansGr": [
            {
                "ans": [
                    "It counteracts loosening by pulling in the opposite direction.",
                    "true"
                ]
            },
            {
                "ans": [
                    "It increases the torque on fasteners to prevent movement.",
                    "false"
                ]
            },
            {
                "ans": [
                    "It links fasteners so loosening one increases tension on the wire.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When safety wiring closely spaced bolts, what determines the maximum number of bolts in a series?",
        "ansGr": [
            {
                "ans": [
                    "The length of the safety wire used.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The torque value applied to each bolt.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The size of the bolts.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When aligning holes for safety wiring during installation, what should be done?",
        "ansGr": [
            {
                "ans": [
                    "Torque first and safety wire only if holes align.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Loosen the fastener to adjust hole position.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Overtorque slightly to match hole alignment.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the correct length of the pigtail at the end of safety wire?",
        "ansGr": [
            {
                "ans": [
                    "1/4 to 1/2 inch.",
                    "true"
                ]
            },
            {
                "ans": [
                    "1 to 2 inch.",
                    "false"
                ]
            },
            {
                "ans": [
                    "1/2 to 1 inch.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following rivets is not used in aircraft?",
        "ansGr": [
            {
                "ans": [
                    "Hardware store rivet.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Blind rivet.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Solid rivet",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Markings on the heads of rivets are used to classify:",
        "ansGr": [
            {
                "ans": [
                    "Their material and strength.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Their installation method.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Their head size.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why do rivets have different colors?",
        "ansGr": [
            {
                "ans": [
                    "To identify the protective surface coating.",
                    "true"
                ]
            },
            {
                "ans": [
                    "To indicate the material of the rivet.",
                    "false"
                ]
            },
            {
                "ans": [
                    "To show the strength of the rivet.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does the number 8 indicate in the rivet P/N MS20470AD5-8?",
        "ansGr": [
            {
                "ans": [
                    "The length of the rivet shank.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The diameter of the rivet shank.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The type of head on the rivets.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What does the number 6 indicate in the rivet P/N NAS1097AD6-9?",
        "ansGr": [
            {
                "ans": [
                    "The diameter of the rivet shank.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The length of the rivet shank.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The type of head on the rivets.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What unit is used to express the diameter of the rivet shank in the part number?",
        "ansGr": [
            {
                "ans": [
                    "32nds of an inch.",
                    "true"
                ]
            },
            {
                "ans": [
                    "16ths of a millimeter.",
                    "false"
                ]
            },
            {
                "ans": [
                    "8ths of a foot.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What unit is used to express the length of the rivet shank in the part number?",
        "ansGr": [
            {
                "ans": [
                    "16ths of an inch.",
                    "true"
                ]
            },
            {
                "ans": [
                    "32nds of a millimeter.",
                    "false"
                ]
            },
            {
                "ans": [
                    "8ths of a foot.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How far should the shank of the self-plugging (friction lock) blind rivet extend beyond the material thickness before the stem is pulled?",
        "ansGr": [
            {
                "ans": [
                    "3/64 inch to 1/8 inch",
                    "true"
                ]
            },
            {
                "ans": [
                    "1/32 inch to 1/16 inch",
                    "false"
                ]
            },
            {
                "ans": [
                    "1/16 inch to 1/4 inch",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the recommended method to reduce the chances of an incorrectly drilled rivet or bolt hole?",
        "ansGr": [
            {
                "ans": [
                    "Use a slightly smaller drill bit first, then enlarge to the correct diameter.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Drill the hole at an angle to prevent elongation.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Use a correct diameter drill bit first, then deburr the hole using a very large drill bit.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When safety wiring widely spaced bolts using the double twist method, what is the maximum number of bolts that should be grouped together in a series?",
        "ansGr": [
            {
                "ans": [
                    "3",
                    "true"
                ]
            },
            {
                "ans": [
                    "4",
                    "false"
                ]
            },
            {
                "ans": [
                    "5",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the primary function of flexible hose in aircraft fluid systems?",
        "ansGr": [
            {
                "ans": [
                    "To connect moving parts with stationary parts in areas subject to vibration.",
                    "true"
                ]
            },
            {
                "ans": [
                    "To replace rigid metal tubing in all high-pressure applications.",
                    "false"
                ]
            },
            {
                "ans": [
                    "To act as a decorative covering for fluid lines.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why should titanium tubing and fittings NOT be used in oxygen systems?",
        "ansGr": [
            {
                "ans": [
                    "Titanium and titanium alloys are oxygen reactive.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Titanium is too heavy.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Titanium is not strong enough.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the purpose of the sleeve in an AN flared fitting?",
        "ansGr": [
            {
                "ans": [
                    "To distribute shearing action and prevent vibration from concentrating at the flare edge.",
                    "true"
                ]
            },
            {
                "ans": [
                    "To distribute shearing action and prevent vibration from concentrating at the flare edge.",
                    "false"
                ]
            },
            {
                "ans": [
                    "To distribute shearing action and prevent vibration from concentrating at the flare edge.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is a key advantage of Teflon hose?",
        "ansGr": [
            {
                "ans": [
                    "Broad operating temperature range and compatibility with various fluids.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Lower cost compared to synthetic rubber hoses.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Limited shelf and service life.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the main purpose of the identification markers on aircraft fluid lines?",
        "ansGr": [
            {
                "ans": [
                    "To clearly show the line's function, content, and potential hazards.",
                    "true"
                ]
            },
            {
                "ans": [
                    "To improve the aesthetic appearance of the aircraft's systems.",
                    "false"
                ]
            },
            {
                "ans": [
                    "To provide a way to track maintenance history on each line.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Who is responsible for replacing identification markers on fluid lines when necessary?",
        "ansGr": [
            {
                "ans": [
                    "The aviation mechanic",
                    "true"
                ]
            },
            {
                "ans": [
                    "The aircraft manufacturer",
                    "false"
                ]
            },
            {
                "ans": [
                    "The Federal Aviation Administration (FAA)",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the purpose of a bulkhead fitting?",
        "ansGr": [
            {
                "ans": [
                    "To secure a fluid line to a bulkhead.",
                    "true"
                ]
            },
            {
                "ans": [
                    "To connect two pieces of tubing of different sizes.",
                    "false"
                ]
            },
            {
                "ans": [
                    "To seal a leak in a fluid line.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What color are AN aluminum fittings?",
        "ansGr": [
            {
                "ans": [
                    "Blue",
                    "true"
                ]
            },
            {
                "ans": [
                    "Black",
                    "false"
                ]
            },
            {
                "ans": [
                    "Cadmium plated",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the unique feature of Cryofit fittings?",
        "ansGr": [
            {
                "ans": [
                    "They use a cryogenic sleeve that shrinks to form a seal.",
                    "true"
                ]
            },
            {
                "ans": [
                    "They are made entirely of titanium.",
                    "false"
                ]
            },
            {
                "ans": [
                    "They can be easily disassembled and reused.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "For what type of systems are flareless fittings primarily designed?",
        "ansGr": [
            {
                "ans": [
                    "High-pressure hydraulic systems",
                    "true"
                ]
            },
            {
                "ans": [
                    "Low-pressure pneumatic systems",
                    "false"
                ]
            },
            {
                "ans": [
                    "Fuel systems",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which tool is used to install Permaswage fittings?",
        "ansGr": [
            {
                "ans": [
                    "Portable hydraulically powered tooling",
                    "true"
                ]
            },
            {
                "ans": [
                    "A standard wrench",
                    "false"
                ]
            },
            {
                "ans": [
                    "A hammer and chisel",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of fitting creates a permanent, virtually maintenance-free connection?",
        "ansGr": [
            {
                "ans": [
                    "Swaged fitting",
                    "true"
                ]
            },
            {
                "ans": [
                    "Flared fitting",
                    "false"
                ]
            },
            {
                "ans": [
                    "Beaded and clamp fitting",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What materials can be used to make springs?",
        "ansGr": [
            {
                "ans": [
                    "Carbon and alloy steel, composite",
                    "true"
                ]
            },
            {
                "ans": [
                    "Carbon and alloy steel, wood",
                    "false"
                ]
            },
            {
                "ans": [
                    "Composite, wood",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the characteristic properties of copper alloys when used as springs?",
        "ansGr": [
            {
                "ans": [
                    "High conductivity",
                    "true"
                ]
            },
            {
                "ans": [
                    "High corrosion resistant",
                    "false"
                ]
            },
            {
                "ans": [
                    "High temperature resistant",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is Belleville spring also called?",
        "ansGr": [
            {
                "ans": [
                    "Cone disc spring",
                    "true"
                ]
            },
            {
                "ans": [
                    "Spiral spring",
                    "false"
                ]
            },
            {
                "ans": [
                    "Flat spring",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the basic way to store energy using springs?",
        "ansGr": [
            {
                "ans": [
                    "Compression, extension and torsion",
                    "true"
                ]
            },
            {
                "ans": [
                    "Compression, charge",
                    "false"
                ]
            },
            {
                "ans": [
                    "Charge, extension and torsion",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is a common application of spiral springs?",
        "ansGr": [
            {
                "ans": [
                    "Powering a wind-up clock",
                    "true"
                ]
            },
            {
                "ans": [
                    "Absorbing shock in vehicles",
                    "false"
                ]
            },
            {
                "ans": [
                    "Supporting heavy loads",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Where are nickel alloys commonly found on aircraft?",
        "ansGr": [
            {
                "ans": [
                    "Engine",
                    "true"
                ]
            },
            {
                "ans": [
                    "Landing gear",
                    "false"
                ]
            },
            {
                "ans": [
                    "Wing",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following statements is correct?",
        "ansGr": [
            {
                "ans": [
                    "A good bearing must be composed of material that is strong enough to withstand the pressure imposed on it and should permit the other surface to move with a minimum of friction and wear.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A good bearing must be composed of material that is strong enough to withstand the pressure imposed on it and should permit the other surface to move with a maximum of friction and wear.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A good bearing must be composed of material that is strong enough to withstand the pressure imposed on it and should permit the other surface to move with a minimum of friction.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What loads can roller bearings taken?",
        "ansGr": [
            {
                "ans": [
                    "Only radial loads",
                    "true"
                ]
            },
            {
                "ans": [
                    "Only thrust loads",
                    "false"
                ]
            },
            {
                "ans": [
                    "Radial loads and thrust load",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What loads can tapered roller bearings taken?",
        "ansGr": [
            {
                "ans": [
                    "Radial loads and thrust load",
                    "true"
                ]
            },
            {
                "ans": [
                    "Only thrust loads",
                    "false"
                ]
            },
            {
                "ans": [
                    "Only radial loads",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What material are bearings made from?",
        "ansGr": [
            {
                "ans": [
                    "Bearings are made from low carbon steel containing nickel, molybdenum and chromium",
                    "true"
                ]
            },
            {
                "ans": [
                    "Bearings are made from hight carbon steel containing nickel, molybdenum and chromium",
                    "false"
                ]
            },
            {
                "ans": [
                    "Bearings are made from copper alloy, containing zinc and silver",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What loads must the bearing taken?",
        "ansGr": [
            {
                "ans": [
                    "Radial loads or thrust load or combination of the two",
                    "true"
                ]
            },
            {
                "ans": [
                    "Only thrust loads",
                    "false"
                ]
            },
            {
                "ans": [
                    "Only radial loads",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following statements is correct?",
        "ansGr": [
            {
                "ans": [
                    "Generally, a rotating shaft in a gas turbine engine is supported by a deep-groove ball bearing (radial and thrust loads) on one end and a straight roller bearing (radial loads only) on the other end.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Generally, a rotating shaft in a gas turbine engine is supported by two deep-groove ball bearings (radial and thrust loads) on both end.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Generally, a rotating shaft in a gas turbine engine is supported by two straight roller bearings (radial loads only) on both ends.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of roller bearing usually used in the aircraft engine?",
        "ansGr": [
            {
                "ans": [
                    "Roller bearings type generally used in the aircraft engine are the straight roller and the tapered roller bearings.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Roller bearings type generally used in the aircraft engine is the straight roller bearing.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Roller bearings type generally used in the aircraft engine is the tapered roller bearings.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why is the ball bearing usually used in gas turbine engines to support one end of a shaft?",
        "ansGr": [
            {
                "ans": [
                    "Due to ball bearing can accept both radial and thrust loads.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Because the ball bearing has a compact design and is highly durable",
                    "false"
                ]
            },
            {
                "ans": [
                    "Both answers above are correct",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How can the bearing surfaces move in relation to each other?",
        "ansGr": [
            {
                "ans": [
                    "The surfaces of the bearings slide or roll relative to each other",
                    "true"
                ]
            },
            {
                "ans": [
                    "The surfaces of the bearings slide relative to each other",
                    "false"
                ]
            },
            {
                "ans": [
                    "The surfaces of the bearings roll relative to each other",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are master rod or crankpin bearings in some engines?",
        "ansGr": [
            {
                "ans": [
                    "Master rod or crankpin bearings in some engines are thin shells of steel, plated with silver on both the inside and the outside surfaces and with lead-tin plated over the silver on the inside surface only.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Master rod or crankpin bearings in some engines are thick shells of steel, plated with silver on both the inside and the outside surfaces and with lead-tin plated over the silver on the inside surface only.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Master rod or crankpin bearings in some engines are thick shells of steel, plated with copper on both the inside and the outside surfaces and with lead-tin plated over the silver on the inside surface only.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of bearings are used in high power reciprocating aircraft engines and gas turbine?",
        "ansGr": [
            {
                "ans": [
                    "Straight roller bearings",
                    "true"
                ]
            },
            {
                "ans": [
                    "Ball bearings and plain bearings",
                    "false"
                ]
            },
            {
                "ans": [
                    "Plain bearings",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the purpose of Oilite bushings in plain bearings?",
        "ansGr": [
            {
                "ans": [
                    "To release oil to the bearing surface through heat generated by friction",
                    "true"
                ]
            },
            {
                "ans": [
                    "To reinforce the structural integrity of the crankshaft",
                    "false"
                ]
            },
            {
                "ans": [
                    "To prevent the bearing from rotating",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Why are ball bearings used in gas turbine engines?",
        "ansGr": [
            {
                "ans": [
                    "To support one end of a shaft (radial loads) and prevent axial movement (thrust loads)",
                    "true"
                ]
            },
            {
                "ans": [
                    "To reduce the need for lubrication",
                    "false"
                ]
            },
            {
                "ans": [
                    "To reduce the overall weight of the engine",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the two types of roller bearings commonly used in aircraft engines?",
        "ansGr": [
            {
                "ans": [
                    "Straight roller and tapered roller bearings",
                    "true"
                ]
            },
            {
                "ans": [
                    "Needle roller and conical roller bearings",
                    "false"
                ]
            },
            {
                "ans": [
                    "Spherical roller and cylindrical roller bearings",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "In a gas turbine engine, what is the typical bearing configuration to support a rotating shaft?",
        "ansGr": [
            {
                "ans": [
                    "A deep-groove ball bearing on one end and a straight roller bearing on the other",
                    "true"
                ]
            },
            {
                "ans": [
                    "Tapered roller bearings on both ends",
                    "false"
                ]
            },
            {
                "ans": [
                    "Straight roller bearings on both ends",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of gear is used for change the plane of rotation?",
        "ansGr": [
            {
                "ans": [
                    "Bevel gears",
                    "true"
                ]
            },
            {
                "ans": [
                    "Worm gears",
                    "false"
                ]
            },
            {
                "ans": [
                    "Planetary gears",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following statements is correct regarding the meshing position of the gears?",
        "ansGr": [
            {
                "ans": [
                    "The ideal placement of the teeth is in the middle area",
                    "true"
                ]
            },
            {
                "ans": [
                    "The ideal placement of the teeth is in the bottom area",
                    "false"
                ]
            },
            {
                "ans": [
                    "The ideal placement of the teeth is in the top area",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the purpose of the clearance between between gear teeth at point of mesh?",
        "ansGr": [
            {
                "ans": [
                    "Clearance between gear teeth at point of mesh allow for expansion and lubrication.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Clearance between gear teeth at point of mesh allow for noise reduction and friction",
                    "false"
                ]
            },
            {
                "ans": [
                    "Both answers above are correct",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following statements is correct?",
        "ansGr": [
            {
                "ans": [
                    "A belt and pulley system is composed of two or more pulleys joined by a belt.",
                    "true"
                ]
            },
            {
                "ans": [
                    "A belt and pulley system is composed of two or more pulleys joined by a chain.",
                    "false"
                ]
            },
            {
                "ans": [
                    "A belt and pulley system is composed of two or more pulleys joined by a cable.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "In the worm gear, how is the mechanical advantage caculated?",
        "ansGr": [
            {
                "ans": [
                    "The mechanical advantage is equal to the number of teeth on the spur gear",
                    "true"
                ]
            },
            {
                "ans": [
                    "Mechanical advantage is twice the number of teeth on the spur gears",
                    "false"
                ]
            },
            {
                "ans": [
                    "The mechanical advantage is half of the number of teeth on the spur gear",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "In the planetary sun gear system, what is responsible for driving the ring gear?",
        "ansGr": [
            {
                "ans": [
                    "Planetary gears",
                    "true"
                ]
            },
            {
                "ans": [
                    "Sun gear",
                    "false"
                ]
            },
            {
                "ans": [
                    "The power output shaft of the engine",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "In the planetary sun gear system, How is the gear reduction rate caculated?",
        "ansGr": [
            {
                "ans": [
                    "The number of teeth on the ring gear is divided by the number of teeth on the sun gear.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The number of teeth on the ring gear is divided by the number of teeth on the planetary gears.",
                    "false"
                ]
            },
            {
                "ans": [
                    "the number of teeth on the sun gear is divided by the number of teeth on the ring gear.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the compound gear?",
        "ansGr": [
            {
                "ans": [
                    "Compound gear is a gear wheel which has more than one driving face, these faces may be formed integrally on one casting or forging, or it may comprise two or more gears bolted or splined together",
                    "true"
                ]
            },
            {
                "ans": [
                    "Compound gear is a gear wheel which has more than three driving face, these faces may be formed integrally on one casting or forging, or it may comprise two or more gears bolted or splined together",
                    "false"
                ]
            },
            {
                "ans": [
                    "Compound gear is a gear wheel which has two driving face, these faces may be formed integrally on one casting or forging, or it may comprise two or more gears bolted or splined together",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following statements is correct?",
        "ansGr": [
            {
                "ans": [
                    "Step-up drive is a drive through a gear train in which the speed of rotation of the output (driven) shaft is increased",
                    "true"
                ]
            },
            {
                "ans": [
                    "Step-up drive is a drive through a gear train in which the speed of rotation of the intput (driven) shaft is increased",
                    "false"
                ]
            },
            {
                "ans": [
                    "Step-up drive is a reduction gear in which the rev/mm of the output shaft is reduced while the torque is increased",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of gear does below definition refer to? -A gear which is positioned between the driving gear and one or more driven gears in a gear train, It may function as an idler gear or transmit drive through its own shaft.",
        "ansGr": [
            {
                "ans": [
                    "INTERMEDIATE GEAR",
                    "true"
                ]
            },
            {
                "ans": [
                    "IDLER GEAR",
                    "false"
                ]
            },
            {
                "ans": [
                    "COMPOUND GEAR",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What happens if the gears are meshed too high relative to the teeth?",
        "ansGr": [
            {
                "ans": [
                    "The load will be transmitted to the smallest portion of the tooth, breaking the teeth.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The load will be transmitted to the largest portion of the tooth, breaking the teeth.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The load will be transmitted to the largest portion of the tooth, reducing transmission efficiency",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What happens if the gears are meshed too tightly into the teeth of another?",
        "ansGr": [
            {
                "ans": [
                    "There will be no lash and the gears will not be properly lubricated",
                    "true"
                ]
            },
            {
                "ans": [
                    "The load will be transmitted to the smallest portion of the tooth, breaking the teeth.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The load will be transmitted to the largest portion of the tooth, reducing transmission efficiency",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What standard must Chains used for aircraft purposes comply with?",
        "ansGr": [
            {
                "ans": [
                    "British Standard BS 228: 1984",
                    "true"
                ]
            },
            {
                "ans": [
                    "British Standard BS 228: 1994",
                    "false"
                ]
            },
            {
                "ans": [
                    "British Standard BS 268: 1994",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "what is the disadvantages of flat belts and pulleys in transmit the power from input to output shafts?",
        "ansGr": [
            {
                "ans": [
                    "Prone to slippage",
                    "true"
                ]
            },
            {
                "ans": [
                    "Prone to broken",
                    "false"
                ]
            },
            {
                "ans": [
                    "Prone to stuck",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which discovery overcame the disadvantages of flat belts and pulleys",
        "ansGr": [
            {
                "ans": [
                    "V- section belts and serrated or 'toothed' belts and pulleys",
                    "true"
                ]
            },
            {
                "ans": [
                    "Adding carbon to the material used to make flat belts and pulleys",
                    "false"
                ]
            },
            {
                "ans": [
                    "Adding metal to the material used to make flat belts and pulleys",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What are the advantages of cable linkage?",
        "ansGr": [
            {
                "ans": [
                    "Strong and light weight",
                    "true"
                ]
            },
            {
                "ans": [
                    "No need to adjust cable tension",
                    "false"
                ]
            },
            {
                "ans": [
                    "Never broken",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What type of cable is commonly used on aircraft?",
        "ansGr": [
            {
                "ans": [
                    "7x7",
                    "true"
                ]
            },
            {
                "ans": [
                    "7x8",
                    "false"
                ]
            },
            {
                "ans": [
                    "7x9",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which of the following statements is true about cable characteristics?",
        "ansGr": [
            {
                "ans": [
                    "7x19 cable is more flexible than 7x7 cable",
                    "true"
                ]
            },
            {
                "ans": [
                    "7x19 cable has the same flexibility as 7x7 cable",
                    "false"
                ]
            },
            {
                "ans": [
                    "7x19 cable has less flexibility than 7x7 cable",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How to quickly connect or disconnect cable to the system?",
        "ansGr": [
            {
                "ans": [
                    "Use cable conneector",
                    "true"
                ]
            },
            {
                "ans": [
                    "Use cable adapter",
                    "false"
                ]
            },
            {
                "ans": [
                    "Use turnbuckle",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is a cable tension tester?",
        "ansGr": [
            {
                "ans": [
                    "Tensiometer",
                    "true"
                ]
            },
            {
                "ans": [
                    "Conductivity meter",
                    "false"
                ]
            },
            {
                "ans": [
                    "Force gauge",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Cable tension regulators are used in which system on an aircraft?",
        "ansGr": [
            {
                "ans": [
                    "Flight control system",
                    "true"
                ]
            },
            {
                "ans": [
                    "Fuel system",
                    "false"
                ]
            },
            {
                "ans": [
                    "Hydraulic system",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is a pressure seal used for?",
        "ansGr": [
            {
                "ans": [
                    "Prevent excess air pressure loss",
                    "true"
                ]
            },
            {
                "ans": [
                    "Hinder movement of the cable",
                    "false"
                ]
            },
            {
                "ans": [
                    "To guide cable",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Are the push rods adjustable in length?",
        "ansGr": [
            {
                "ans": [
                    "They can be adjusted at one or both ends",
                    "true"
                ]
            },
            {
                "ans": [
                    "They can only adjust one end",
                    "false"
                ]
            },
            {
                "ans": [
                    "They cannot adjust the length",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the turnbuckle used for?",
        "ansGr": [
            {
                "ans": [
                    "Making minor adjustments in cable length and for adjusting cable tension",
                    "true"
                ]
            },
            {
                "ans": [
                    "Cable protection",
                    "false"
                ]
            },
            {
                "ans": [
                    "Hinder movement of the cable",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "What is the cable drum used for?",
        "ansGr": [
            {
                "ans": [
                    "Trim tab system",
                    "true"
                ]
            },
            {
                "ans": [
                    "Primary flight control system",
                    "false"
                ]
            },
            {
                "ans": [
                    "Landing gear extension system",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "How does a Bowden cable transmit mechanical force?",
        "ansGr": [
            {
                "ans": [
                    "By linear movement of the inner cable within a fixed outer housing",
                    "true"
                ]
            },
            {
                "ans": [
                    "By rotational movement of both inner and outer cables",
                    "false"
                ]
            },
            {
                "ans": [
                    "By hydraulic pressure inside the housing",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When is a torque tube installed in a control system?",
        "ansGr": [
            {
                "ans": [
                    "When angular or twisting motion is required",
                    "true"
                ]
            },
            {
                "ans": [
                    "When hydraulic pressure must be increased",
                    "false"
                ]
            },
            {
                "ans": [
                    "When linear motion is required over a long distance",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "There are two definitions of a wire:",
        "ansGr": [
            {
                "ans": [
                    "Solid conductor and stranded conductor.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Solid conductor and insulated conductor.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Single conductor and stranded conductor.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Wire harnesses are extensively used in aircraft to:",
        "ansGr": [
            {
                "ans": [
                    "Connect all the electrical components.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Connect all the mechanical components.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Connect all the hydraulic components.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Because of in-flight vibration and flexing, conductor round wire should be stranded to:",
        "ansGr": [
            {
                "ans": [
                    "Minimize fatigue breakage.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Minimize the possibility of arcing.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Optimize strength capacity.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "The two most generally used conductors are:",
        "ansGr": [
            {
                "ans": [
                    "Copper and aluminum.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Copper and silver.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Copper and Nickel.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Characteristics of copper wire:",
        "ansGr": [
            {
                "ans": [
                    "High conductivity; high ductile, high tensile strength.",
                    "true"
                ]
            },
            {
                "ans": [
                    "High conductivity; high resistance, high tensile strength.",
                    "false"
                ]
            },
            {
                "ans": [
                    "High resistance; high ductile, high tensile strength.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Backshell is a part of:",
        "ansGr": [
            {
                "ans": [
                    "Connector.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Terminal.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Bundle.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Inadequate bonding or grounding can lead to:",
        "ansGr": [
            {
                "ans": [
                    "Damage from lightning strike.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Short circuits.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Over voltages.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "0.003 Ohm means.",
        "ansGr": [
            {
                "ans": [
                    "3 miliohms.",
                    "true"
                ]
            },
            {
                "ans": [
                    "3 Ohms.",
                    "false"
                ]
            },
            {
                "ans": [
                    "3 kiloohm.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Ties, lacing, and straps are used to.",
        "ansGr": [
            {
                "ans": [
                    "Secure wire groups or bundles.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Secure lead bondings.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Secure connectors.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When using any type of wire stripper, hold the wire so that.",
        "ansGr": [
            {
                "ans": [
                    "It is perpendicular to cutting blades.",
                    "true"
                ]
            },
            {
                "ans": [
                    "It is parralel to cutting blades.",
                    "false"
                ]
            },
            {
                "ans": [
                    "It is perpendicular to stripper handles.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Before wire can be assembled to connectors, terminals, splices,",
        "ansGr": [
            {
                "ans": [
                    "The insulation must be stripped.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The insulation must be cleaned.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The wire must be crimped.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Copper wire can be stripped in a number of ways depending on:",
        "ansGr": [
            {
                "ans": [
                    "The size and insulation.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The length and insulation.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The size and conductor.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "The advantages of opening electrical wiring are:",
        "ansGr": [
            {
                "ans": [
                    "Ease of maintenance and reduced weight.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Ease of access and reduced weight.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Ease of maintenance and fail safe.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "The wiring harness could be covered by a shielding (metal braid) to avoid:",
        "ansGr": [
            {
                "ans": [
                    "Electro Magnetic Interference.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Dirt and chemicals.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Electrical chafing.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Wires are often installed in bundles to:",
        "ansGr": [
            {
                "ans": [
                    "Create a more organized installation.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Create a more organized area.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Easy to remove and install.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Wires and harness located in wheel well area must be:",
        "ansGr": [
            {
                "ans": [
                    "Inspected frequently and replaced at the first sign of wear.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Inspected and replaced when broken.",
                    "false"
                ]
            },
            {
                "ans": [
                    "check and replace if necessary.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Clamps on wire bundles should be selected so that:",
        "ansGr": [
            {
                "ans": [
                    "Snug fit without pinching wires.",
                    "true"
                ]
            },
            {
                "ans": [
                    "larger than the bundle diameter.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Snug fit with the bundle.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Wiring should be installed with sufficient slack so that.",
        "ansGr": [
            {
                "ans": [
                    "Bundles and individual wires are not under tension",
                    "true"
                ]
            },
            {
                "ans": [
                    "Bundles and individual wires arranged in a straight line.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Bundles and individual wires are in tension",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Wiring should be installed with sufficient slack and should:",
        "ansGr": [
            {
                "ans": [
                    "Not exceed 1⁄2 inch deflection between support points.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Not exceed 2 inch deflection between support points.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Exceed 1⁄2 inch deflection between support points.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When checking the insulation of the wire for damage after twisting. If the insulation is torn or frayed,",
        "ansGr": [
            {
                "ans": [
                    "Replace the wire.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Permanent repair.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Temporary repair.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Splices in bundles must be staggered to:",
        "ansGr": [
            {
                "ans": [
                    "Minimize any increase in the size of the bundle,",
                    "true"
                ]
            },
            {
                "ans": [
                    "Increase in the size of the bundle,",
                    "false"
                ]
            },
            {
                "ans": [
                    "Optimize electrical conductivity.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Splices should not be used of a termination device within:",
        "ansGr": [
            {
                "ans": [
                    "12 inches.",
                    "true"
                ]
            },
            {
                "ans": [
                    "12 meters.",
                    "false"
                ]
            },
            {
                "ans": [
                    "24 inches.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Wires and wire groups should be protected against chafing to prevent:",
        "ansGr": [
            {
                "ans": [
                    "Short circuits.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Open circuits.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Over voltages.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Wiring must be routed away from high-temperature equipment and lines to prevent:",
        "ansGr": [
            {
                "ans": [
                    "Deterioration of insulation.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Damaging the wire core.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Discoloration of insulation.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Conduits or flexible sleeving used to protect wiring must be equipped with drain holes to prevent:",
        "ansGr": [
            {
                "ans": [
                    "entrapment of moisture.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Against chafing.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Intrusion of foreign objects.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When choosing to use clamps on coaxial RF cables.",
        "ansGr": [
            {
                "ans": [
                    "Clamps must be fit and snug enough",
                    "true"
                ]
            },
            {
                "ans": [
                    "Clamps must be larger than the coaxial cable.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Clamps must be smaller than the coaxial cable.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Wires and wire bundles must be supported by:",
        "ansGr": [
            {
                "ans": [
                    "Clamps or plastic cable straps.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Clamps or metal cable straps.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Spacers or plastic cable straps.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Clamps on wire bundles should be selected so that:",
        "ansGr": [
            {
                "ans": [
                    "Snug fit without pinching wires.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Larger than the bundle diameter.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Smaller than the bundle diameter.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "The separation between wiring and movable controls.",
        "ansGr": [
            {
                "ans": [
                    "Must be at least 1⁄2 inch.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Must be less than 1⁄2 inch.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Must be fixed at 1⁄2 inch.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "One of the more important factors in the design and maintenance of aircraft electrical systems is:",
        "ansGr": [
            {
                "ans": [
                    "Proper bonding and grounding.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Proper bonding and connecting.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Proper marking and grounding.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which statement is correct?",
        "ansGr": [
            {
                "ans": [
                    "The resistance of all bond and ground connections should be tested after connections are made before re-finishing.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The resistance of all bond and ground connections should be tested before performing connections .",
                    "false"
                ]
            },
            {
                "ans": [
                    "The resistance of all bond and ground connections should be inspected after connections are made before re-finishing.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "The bonding and grounding resistance of each connection should normally:",
        "ansGr": [
            {
                "ans": [
                    "Not exceed 0.003 ohm.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Not exceed 3.0 ohm.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Exceed 0.003 ohm.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Inadequate bonding or grounding can lead to:",
        "ansGr": [
            {
                "ans": [
                    "Damage from lightning strike.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Short circuits.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Over voltages.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "0.003 Ohm means.",
        "ansGr": [
            {
                "ans": [
                    "3 miliohms.",
                    "true"
                ]
            },
            {
                "ans": [
                    "3 Ohms.",
                    "false"
                ]
            },
            {
                "ans": [
                    "3 kiloohm.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Bonding jumpers installed in such a manner that the resistance of each connection.",
        "ansGr": [
            {
                "ans": [
                    "Not exceed 0.3 ohm.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Not exceed 3.0 ohm.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Exceed 0.3 ohm.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Ties, lacing, and straps are used to.",
        "ansGr": [
            {
                "ans": [
                    "Secure wire groups or bundles.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Secure lead bondings.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Secure connectors.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When using any type of wire stripper, hold the wire so that.",
        "ansGr": [
            {
                "ans": [
                    "It is perpendicular to cutting blades.",
                    "true"
                ]
            },
            {
                "ans": [
                    "It is parralel to cutting blades.",
                    "false"
                ]
            },
            {
                "ans": [
                    "It is perpendicular to stripper handles.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Before wire can be assembled to connectors, terminals, splices,",
        "ansGr": [
            {
                "ans": [
                    "The insulation must be stripped.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The insulation must be cleaned.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The wire must be crimped.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Copper wire can be stripped in a number of ways depending on:",
        "ansGr": [
            {
                "ans": [
                    "The size and insulation.",
                    "true"
                ]
            },
            {
                "ans": [
                    "The length and insulation.",
                    "false"
                ]
            },
            {
                "ans": [
                    "The size and conductor.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "When Adjust automatic stripping tools. Must follow:",
        "ansGr": [
            {
                "ans": [
                    "Manufacturer’s instructions.",
                    "true"
                ]
            },
            {
                "ans": [
                    "AMM.",
                    "false"
                ]
            },
            {
                "ans": [
                    "ESPM.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Each slot on the wire stripper is marked with:",
        "ansGr": [
            {
                "ans": [
                    "Wire size.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Wire length.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Wire gauge.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "For stripping wire with a hand stripper.",
        "ansGr": [
            {
                "ans": [
                    "Insert wire into exact center of correct cutting slot for wire size to be stripped.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Insert wire into exact edge of correct cutting slot for wire size to be stripped.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Insert wire into exact center of correct cutting slot for wire length to be stripped.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Terminal strips in the aircraft electrical system should be inspected for:",
        "ansGr": [
            {
                "ans": [
                    "Loose connections, dirt and grease accumulation.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Corrosion, dirt and grease accumulation.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Loose connections, low resistance.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Maximum number of terminal lugs connected to any one stud:",
        "ansGr": [
            {
                "ans": [
                    "4",
                    "true"
                ]
            },
            {
                "ans": [
                    "3",
                    "false"
                ]
            },
            {
                "ans": [
                    "2",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Crimping tools are used for:",
        "ansGr": [
            {
                "ans": [
                    "Crimping terminal lugs.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Stripping wire.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Connecting wire shields",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Broken wires can be emergency repaired by means of:",
        "ansGr": [
            {
                "ans": [
                    "Crimped splices,",
                    "true"
                ]
            },
            {
                "ans": [
                    "Welded splices.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Crimped contacs,",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Coaxial cable precautions include:",
        "ansGr": [
            {
                "ans": [
                    "Never bend coaxial cable sharply.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Use coaxial cable for a handle.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Pull on coaxial cable not in a straight line.",
                    "false"
                ]
            }
        ]
    },
    {
        "ch": "Which statement is correct?",
        "ansGr": [
            {
                "ans": [
                    "Coaxial cable can be severely damaged on the inside without any evidence of damage on the outside.",
                    "true"
                ]
            },
            {
                "ans": [
                    "Coaxial cables can be severely damaged and can be detected by general visual inspection.",
                    "false"
                ]
            },
            {
                "ans": [
                    "Coaxial cable can not be severely damaged on the inside because it is protected by a shield.",
                    "false"
                ]
            }
        ]
    }
]