[ { "ch": "Major advantage of propeller-driven aircraft over pure jets airvraft is?", "ansGr": [ { "ans": [ "lower cost and shortened take-off and landing distances", "true" ] }, { "ans": [ "higher cost and shortened take-off and landing distances", "false" ] }, { "ans": [ "lower cost and long take-off and landing distances", "false" ] } ] }, { "ch": "The propeller is 'ground idle' when the blades are at", "ansGr": [ { "ans": [ "0 degree", "true" ] }, { "ans": [ "20 to 35 degree", "false" ] }, { "ans": [ "10 to 12 degree", "false" ] } ] }, { "ch": "The propeller is 'locked' when the blades are at", "ansGr": [ { "ans": [ "1 to 2 degree", "true" ] }, { "ans": [ "0 degree", "false" ] }, { "ans": [ "-2 to -8 degree", "false" ] } ] }, { "ch": "The propeller is 'powered' when the blades are at", "ansGr": [ { "ans": [ "20 to 35 degree", "true" ] }, { "ans": [ "85 to 90 degree", "false" ] }, { "ans": [ "0 degree", "false" ] } ] }, { "ch": "Newton’s Third Law of Motion that states:", "ansGr": [ { "ans": [ "for every action there is an equal and opposite reaction", "true" ] }, { "ans": [ "for every action there is double and opposite reaction", "false" ] }, { "ans": [ "for every action there is an equal and same reaction", "false" ] } ] }, { "ch": "The blade angle for each segment of a fixed pitch propeller is", "ansGr": [ { "ans": [ "the angle formed by the chord line of the blade segment and its plane of rotation", "true" ] }, { "ans": [ "the angle formed by the blade face of the blade segment and its plane of rotation", "false" ] }, { "ans": [ "the angle formed by the blade back of the blade segment and its plane of rotation", "false" ] } ] }, { "ch": "What force on a propeller blade turns the blades to low pitch position?", "ansGr": [ { "ans": [ "CTM", "true" ] }, { "ans": [ "ATM", "false" ] }, { "ans": [ "Torque", "false" ] } ] }, { "ch": "On a right-hand rotating propeller, torque works to:", "ansGr": [ { "ans": [ "drop the left wing", "true" ] }, { "ans": [ "raise the left wing", "false" ] }, { "ans": [ "raise the right wing", "false" ] } ] }, { "ch": "The work done by thrust is:", "ansGr": [ { "ans": [ "equal to the thrust times the distance it moves the airplane", "true" ] }, { "ans": [ "equal to the thrust times the velocity it moves the airplane", "false" ] }, { "ans": [ "equal to the thrust times the mass of air when it moves the airplane", "false" ] } ] }, { "ch": "The power expended by thrust is:", "ansGr": [ { "ans": [ "equal to the thrust times the velocity at which it moves the airplane", "true" ] }, { "ans": [ "equal to the thrust times the distance at which it moves the airplane", "false" ] }, { "ans": [ "equal to the thrust times the mass of air when it moves the airplane", "false" ] } ] }, { "ch": "Relative airflow is the airflow due to the", "ansGr": [ { "ans": [ "Combination of propeller rotation and aircraft forward speed", "true" ] }, { "ans": [ "Combination of propeller rotation and the blade segment", "false" ] }, { "ans": [ "Combination of the blade speed and aircraft forward speed", "false" ] } ] }, { "ch": "What is gyroscopic precession?", "ansGr": [ { "ans": [ "That is the response of a gyroscope to generate an action 90° from the point of input in the direction of rotation", "true" ] }, { "ans": [ "That is the response of a gyroscope to generate an action 90° from the point of output in the direction of rotation", "false" ] }, { "ans": [ "That is the response of a gyroscope to generate an action 180° from the point of input in the direction of rotation", "false" ] } ] }, { "ch": "Which is TRUE for the angle of attack of a fixed-pitch propeller blade?", "ansGr": [ { "ans": [ "The faster the airspeed of the airplane, the less the angle of attack", "true" ] }, { "ans": [ "The faster the airspeed of the airplane, the higher the angle of attack", "false" ] }, { "ans": [ "The lower the airspeed of the airplane, the less the angle of attack", "false" ] } ] }, { "ch": "With a twisting propeller blade:", "ansGr": [ { "ans": [ "The angle of the blade near the hub is higher than the angle at the tip", "true" ] }, { "ans": [ "The angle of the blade near the hub is lessr than the angle at the tip", "false" ] }, { "ans": [ "The angle of the blade near the hub is same as the angle at the tip", "false" ] } ] }, { "ch": "Propeller-driven aircraft are limited by?", "ansGr": [ { "ans": [ "Revolutions per minute (rpm)", "true" ] }, { "ans": [ "Torque", "false" ] }, { "ans": [ "Hourse power", "false" ] } ] }, { "ch": "What forces act on a propeller blade?", "ansGr": [ { "ans": [ "Bending, CTM and ATM", "true" ] }, { "ans": [ "Thrust and torque", "false" ] }, { "ans": [ "Bending, thrust, torque", "false" ] } ] }, { "ch": "What is centrifugal force?", "ansGr": [ { "ans": [ "It is a physical action that tends to pull the rotating propeller blades out of the hub", "true" ] }, { "ans": [ "It is a physical action that tends to pull the rotating propeller blades in the direction opposite than of rotation", "false" ] }, { "ans": [ "It is a physical action that tends to bend the propeller blades in the direction opposite than of rotation", "false" ] } ] }, { "ch": "The purpose of propeller twist is", "ansGr": [ { "ans": [ "to maintain Angle of Attack at the same value along the blade", "true" ] }, { "ans": [ "to maintain Blade Angle along the blade", "false" ] }, { "ans": [ "coarsen the blade angle at the root", "false" ] } ] }, { "ch": "At a relatively slow speed, in comparison to a jet engine, a propeller moves: a large mass of air", "ansGr": [ { "ans": [ "a large mass of air", "true" ] }, { "ans": [ "a lsame mass of air", "false" ] }, { "ans": [ "a small mass of air", "false" ] } ] }, { "ch": "What force on a propeller blade turns the blades to high pitch position?", "ansGr": [ { "ans": [ "ATM", "true" ] }, { "ans": [ "CTM", "false" ] }, { "ans": [ "Torque", "false" ] } ] }, { "ch": "P-Factor is generated during?", "ansGr": [ { "ans": [ "climbs", "true" ] }, { "ans": [ "cruise", "false" ] }, { "ans": [ "descend", "false" ] } ] }, { "ch": "Pilots compensate for P-Factor by applying", "ansGr": [ { "ans": [ "the necessary rudder input", "true" ] }, { "ans": [ "the necessary aileron input", "false" ] }, { "ans": [ "the necessary elevatorr input", "false" ] } ] }, { "ch": "For righthand rotating propellers, the aircraft develops:", "ansGr": [ { "ans": [ "a yawing moment to the left", "true" ] }, { "ans": [ "a rolling moment to the left", "false" ] }, { "ans": [ "a rolling moment to the right", "false" ] } ] }, { "ch": "When in the windmill position ATM", "ansGr": [ { "ans": [ "assists CTM", "true" ] }, { "ans": [ "opposes CTM", "false" ] }, { "ans": [ "is not related to CTM", "false" ] } ] }, { "ch": "Propeller blade stations are measured from", "ansGr": [ { "ans": [ "The centre of the hub", "true" ] }, { "ans": [ "The master station", "false" ] }, { "ans": [ "The root", "false" ] } ] }, { "ch": "Steel propeller blades are used normally on", "ansGr": [ { "ans": [ "Large engines", "true" ] }, { "ans": [ "Lightweight engines", "false" ] }, { "ans": [ "Small engines", "false" ] } ] }, { "ch": "A reverse pitch propeller is", "ansGr": [ { "ans": [ "Where the blade pitch has been reduced to a negative pitch to reduce the aircraft's speed", "true" ] }, { "ans": [ "Where the blade pitch has been decreased - to increase the forward thrust", "false" ] }, { "ans": [ "Where the blade pitch has been increased - to increase the forward thrust", "false" ] } ] }, { "ch": "A typical propeller blade will have:", "ansGr": [ { "ans": [ "A high blade angle near the hub and a shallow blade angle at the tip", "true" ] }, { "ans": [ "A low blade angle near the hub and a shallow blade angle at the root", "false" ] }, { "ans": [ "A high blade angle near the hub and a shallow blade angle at the root", "false" ] } ] }, { "ch": "Climb propellers generally have", "ansGr": [ { "ans": [ "A lower pitch or shorter diameter", "true" ] }, { "ans": [ "A higher pitch or shorter diameter", "false" ] }, { "ans": [ "A lower pitch or longer diameter", "false" ] } ] }, { "ch": "The fixed-pitch propeller is used on airplanes of", "ansGr": [ { "ans": [ "Low power, speed, range, or altitude", "true" ] }, { "ans": [ "Low power, speed, rangeand high altitude", "false" ] }, { "ans": [ "High power, speed, range, or altitude", "false" ] } ] }, { "ch": "In the U.S., the minimum clearance between the tip of the propeller and ground is", "ansGr": [ { "ans": [ "Seven inches (18 cm) for nose wheel aircraft and nine inches (23 cm) for tail wheel aircraft", "true" ] }, { "ans": [ "Nine inches (23 cm) for nose wheel aircraft and seven inches (18 cm) for tail wheel aircraft", "false" ] }, { "ans": [ "Six inches (15 cm) for nose wheel aircraft and nine inches (23 cm) for tail wheel aircraft", "false" ] } ] }, { "ch": "Tractor propellers are those mounted on", "ansGr": [ { "ans": [ "The upstream end of a propeller shaft in front of the supporting structure", "true" ] }, { "ans": [ "The downstream end of a propeller shaft behind the supporting structure", "false" ] }, { "ans": [ "The downstream end of a propeller shaft in front of the supporting structure", "false" ] } ] }, { "ch": "Pusher propellers are those mounted on", "ansGr": [ { "ans": [ "The downstream end of a propeller shaft behind the supporting structure", "true" ] }, { "ans": [ "The upstream end of a propeller shaft in front of the supporting structure", "false" ] }, { "ans": [ "The upstream end of a propeller shaft behind the supporting structure", "false" ] } ] }, { "ch": "Metal at the tip and along the leading edge of a wooden propeller is", "ansGr": [ { "ans": [ "For protection", "true" ] }, { "ans": [ "For balancing", "false" ] }, { "ans": [ "For Anti-icing", "false" ] } ] }, { "ch": "The thrust of a propeller is normally taken by the", "ansGr": [ { "ans": [ "Propeller hub", "true" ] }, { "ans": [ "Torque meter", "false" ] }, { "ans": [ "Propeller rear cone", "false" ] } ] }, { "ch": "Cruise propellers are built with", "ansGr": [ { "ans": [ "Higher pitch angles and longer diameters", "true" ] }, { "ans": [ "A higher pitch or shorter diameter", "false" ] }, { "ans": [ "A lower pitch or shorter diameter", "false" ] } ] }, { "ch": "Why is it important to keep the metal drain holes on a wooden propeller tip open during operation?", "ansGr": [ { "ans": [ "To allow moisture to escape", "true" ] }, { "ans": [ "To reduce air drag", "false" ] }, { "ans": [ "To cool the metal tipping", "false" ] } ] }, { "ch": "Why do metal fixed-pitch propellers cool the engine more efficiently?", "ansGr": [ { "ans": [ "Because effective pitch is closer to the hub", "true" ] }, { "ans": [ "Because aluminium absorbs engine heat faster", "false" ] }, { "ans": [ "Because thinner blades reduce back pressure", "false" ] } ] }, { "ch": "How does the blade back contribute to thrust generation?", "ansGr": [ { "ans": [ "It creates low pressure, pulling the blade forward like the suction on a wing", "true" ] }, { "ans": [ "It directs airflow to the engine intake to increase combustion pressure", "false" ] }, { "ans": [ "It compresses incoming air to reduce drag and maintain blade angle", "false" ] } ] }, { "ch": "The speeder spring propeller governing range is limited to?", "ansGr": [ { "ans": [ "About 200 rpm", "true" ] }, { "ans": [ "About 2000 rpm", "false" ] }, { "ans": [ "About 20000 rpm", "false" ] } ] }, { "ch": "Time for feathering with feathering propeller system is?", "ansGr": [ { "ans": [ "Between 03 and 10 seconds", "true" ] }, { "ans": [ "Between 10 and 15 seconds", "false" ] }, { "ans": [ "Between 15 and 30 seconds", "false" ] } ] }, { "ch": "Propeller blade counterweights always move the blades to?", "ansGr": [ { "ans": [ "High pitch", "true" ] }, { "ans": [ "Low pitch", "false" ] }, { "ans": [ "Feather", "false" ] } ] }, { "ch": "How about blades pitch and engine rpm during over speed conditions?", "ansGr": [ { "ans": [ "Propeller blade pitch is increase and reduces engine rpm", "true" ] }, { "ans": [ "Propeller blade pitch is decrease and reduces engine rpm", "false" ] }, { "ans": [ "Propeller blade pitch is increase and increases engine rpm", "false" ] } ] }, { "ch": "Blade cuffs are fitted to the root of the blades", "ansGr": [ { "ans": [ "To increase flow of cooling air into the engine nacelle", "true" ] }, { "ans": [ "to increase the strength of the blade", "false" ] }, { "ans": [ "to increase thrust", "false" ] } ] }, { "ch": "Low torque sensing is used to", "ansGr": [ { "ans": [ "Initiate auto-feather", "true" ] }, { "ans": [ "increase power", "false" ] }, { "ans": [ "increase pitch", "false" ] } ] }, { "ch": "A hydraulic pitch lock is utilised in a hydromatic propeller to", "ansGr": [ { "ans": [ "Lock out the fine pitch oil line in the event of overspeeding", "true" ] }, { "ans": [ "lock out the course pitch oil line in the event of underspeeding", "false" ] }, { "ans": [ "prevent the propeller overspeeding in the event of oil supply failure", "false" ] } ] }, { "ch": "When in the beta range, the propeller pitch is controlled", "ansGr": [ { "ans": [ "Directly from the power lever", "true" ] }, { "ans": [ "indirectly from the power lever", "false" ] }, { "ans": [ "directly from the pitch change mechanism to the PCU", "false" ] } ] }, { "ch": "In a propeller with counterweights, what is used to make it move to fine pitch?", "ansGr": [ { "ans": [ "Governor oil pressure", "true" ] }, { "ans": [ "Centrifugal force acting on the counterweight", "false" ] }, { "ans": [ "ATM", "false" ] } ] }, { "ch": "What pitch setting is the automatic propellers provided for take-off?", "ansGr": [ { "ans": [ "A lower pitch setting", "true" ] }, { "ans": [ "A higher pitch setting", "false" ] }, { "ans": [ "No change pitch setting", "false" ] } ] }, { "ch": "Can early controllable pitch propellers provide constant-speed operations?", "ansGr": [ { "ans": [ "No, they can not provide constant-speed operations", "true" ] }, { "ans": [ "Yes, thay can provide constant-speed operations", "false" ] }, { "ans": [ "Yes, in some phase of flight", "false" ] } ] }, { "ch": "Which propellers are made available the option for pilots to select a variety of fixed-pitch positions in addition to constant speed operations?", "ansGr": [ { "ans": [ "Electrically controlled propellers", "true" ] }, { "ans": [ "Fixed-pitch propellers", "false" ] }, { "ans": [ "A constant speed propeller", "false" ] } ] }, { "ch": "One of extreme positions for the propeller control is?", "ansGr": [ { "ans": [ "Increase rpm or low pitch (full forward)", "true" ] }, { "ans": [ "Decrease rpm or low pitch (full forward)", "false" ] }, { "ans": [ "Increase rpm or low pitch (full aft)", "false" ] } ] }, { "ch": "Two main engine instruments used for setting power with the constant-speed propeller is?", "ansGr": [ { "ans": [ "Tachometer and the manifold pressure gauge", "true" ] }, { "ans": [ "Governor and the manifold pressure gauge", "false" ] }, { "ans": [ "Tachometer and the throttle", "false" ] } ] }, { "ch": "For any single revolution of the propeller, the amount of air displaced (directionally moved) depends on?", "ansGr": [ { "ans": [ "The blade angle", "true" ] }, { "ans": [ "Revolutions per minute", "false" ] }, { "ans": [ "Torque", "false" ] } ] }, { "ch": "For the same throttle setting, a reduction of engine rpm will?", "ansGr": [ { "ans": [ "Increase the MAP", "true" ] }, { "ans": [ "Decrease the MAP", "false" ] }, { "ans": [ "Keep the MAP constant", "false" ] } ] }, { "ch": "When increasing propeller blade angle, it will?", "ansGr": [ { "ans": [ "Increases the angle of attack (AOA) and produces more thrust and drag", "true" ] }, { "ans": [ "Decreases the angle of attack (AOA) and produces more lift and drag", "false" ] }, { "ans": [ "Increases the angle of attack (AOA) and produces less lift and drag", "false" ] } ] }, { "ch": "Which propellers are designed for best efficiency at one rotation and forward speed?", "ansGr": [ { "ans": [ "Fixed-pitch and ground-adjustable propellers", "true" ] }, { "ans": [ "Controlable-pitch and ground-adjustable propellers", "false" ] }, { "ans": [ "Constant speed and ground-adjustable propellers", "false" ] } ] }, { "ch": "Propeller governor is an engine rpm sensing device with?", "ansGr": [ { "ans": [ "A high-pressure oil pump", "true" ] }, { "ans": [ "A high-pressure fuel pump", "false" ] }, { "ans": [ "A high-pressurehydraulicl pump", "false" ] } ] }, { "ch": "Pneumatic pressure against the propeller piston pushes the blades to?", "ansGr": [ { "ans": [ "High pitch", "true" ] }, { "ans": [ "Low pitch", "false" ] }, { "ans": [ "Zero position", "false" ] } ] }, { "ch": "Springs is push the blades in the direction of?", "ansGr": [ { "ans": [ "High pitch and Feather", "true" ] }, { "ans": [ "Low pitch and Feather", "false" ] }, { "ans": [ "Low pitch and high pitch", "false" ] } ] }, { "ch": "To balances against the propeller blade counterweights, propeller governor oil on the propeller piston side of the governor moves the blades to?", "ansGr": [ { "ans": [ "Low pitch", "true" ] }, { "ans": [ "High pitch", "false" ] }, { "ans": [ "Feather", "false" ] } ] }, { "ch": "In under-speed condition, the governor flyweights turn?", "ansGr": [ { "ans": [ "Slower than the tension on the speeder spring and move inward", "true" ] }, { "ans": [ "Faster than the tension on the speeder spring and move inward", "false" ] }, { "ans": [ "Faster than the tension on the speeder spring and move outward", "false" ] } ] }, { "ch": "When the engine is running at low rpm, the governor attempts propeller to?", "ansGr": [ { "ans": [ "Low pitch", "true" ] }, { "ans": [ "High pitch", "false" ] }, { "ans": [ "Feather", "false" ] } ] }, { "ch": "In an on-speed condition, the centrifugal force acting on the governor’s flyweights is?", "ansGr": [ { "ans": [ "Balanced by the tension exerted by the speeder spring", "true" ] }, { "ans": [ "Higher by the tension exerted by the speeder spring", "false" ] }, { "ans": [ "Lower by the tension exerted by the speeder spring", "false" ] } ] }, { "ch": "In the constant-speed mode, the tension of the speeder spring sets the engine to?", "ansGr": [ { "ans": [ "Maximum rpm", "true" ] }, { "ans": [ "Minimum rpm", "false" ] }, { "ans": [ "Constant speed", "false" ] } ] }, { "ch": "In an under-speed condition, the arms of the flyweights tilt?", "ansGr": [ { "ans": [ "Inward", "true" ] }, { "ans": [ "Outward", "false" ] }, { "ans": [ "Downward", "false" ] } ] }, { "ch": "In an over speed condition, the centrifugal force acting on the flyweights is?", "ansGr": [ { "ans": [ "Greater than the speeder spring force", "true" ] }, { "ans": [ "Less than the speeder spring force", "false" ] }, { "ans": [ "Same as the speeder spring force", "false" ] } ] }, { "ch": "In an over speed condition, the pilot valve meters oil flow to?", "ansGr": [ { "ans": [ "Increase propeller pitch and lower engine rpm", "true" ] }, { "ans": [ "Decrease propeller pitch and lower engine rpm", "false" ] }, { "ans": [ "Increase propeller pitch and higher engine rpm", "false" ] } ] }, { "ch": "What is mentioned about counterweights are used in the hydromatic propeller?", "ansGr": [ { "ans": [ "No counterweights are used on the propeller blades", "true" ] }, { "ans": [ "Symetric counterweights are used on the propeller blades", "false" ] }, { "ans": [ "One or more counterweights are used on the propeller blades", "false" ] } ] }, { "ch": "Feathering and unfeathering the Hamilton Standard propeller are achieved through?", "ansGr": [ { "ans": [ "An auxiliary oil pump", "true" ] }, { "ans": [ "A boost pump", "false" ] }, { "ans": [ "An auxiliary hydraulic pump", "false" ] } ] }, { "ch": "What will occcur if the engines/ propellers are not perfectly synchronized in term of rpm?", "ansGr": [ { "ans": [ "Vibration and noise will occur", "true" ] }, { "ans": [ "Vibration and reducing thrust will occur", "false" ] }, { "ans": [ "Vibration and increasing drag will occur", "false" ] } ] }, { "ch": "How does the pilot manually synchronize the propeller when the aircraft is not equipped with synchronization devices?", "ansGr": [ { "ans": [ "By positioning the propeller control levers", "true" ] }, { "ans": [ "By positioning the propeller control push button", "false" ] }, { "ans": [ "By positioning the propeller control switch", "false" ] } ] }, { "ch": "Which is the principle of Type II synchronizing systems?", "ansGr": [ { "ans": [ "The system will compare the rpm (round per minute) of the engines and raise the speed of the engines running at a lower rpm", "true" ] }, { "ans": [ "The system will compare the rpm (round per minute) of the engines and reduce the speed of the engines running at a higher rpm", "false" ] }, { "ans": [ "The system will compare the rpms (round per minute) of the engines and raise the speed of the engines running at a lower rpm", "false" ] } ] }, { "ch": "What does FADEC stand for?", "ansGr": [ { "ans": [ "Full Authority Digital Engine Control", "true" ] }, { "ans": [ "Full Acess Digital Engine Control", "false" ] }, { "ans": [ "Fuel Authority Digital Engine Control", "false" ] } ] }, { "ch": "When will the FADEC system provide synchronization and synchrophasing automatically for propeller aircrafts?", "ansGr": [ { "ans": [ "The engines are operating in a constant speed mode", "true" ] }, { "ans": [ "The engines are operating in a take off mode", "false" ] }, { "ans": [ "The engines are operating in climb mode", "false" ] } ] }, { "ch": "What does the basic system use to determine and monitor the position of a target blade for each propeller?", "ansGr": [ { "ans": [ "Sensors", "true" ] }, { "ans": [ "Phonic wheels", "false" ] }, { "ans": [ "Angle meters", "false" ] } ] }, { "ch": "How will the propeller aircraft synchronize and synchrophase the propellers?", "ansGr": [ { "ans": [ "Manually or automatically", "true" ] }, { "ans": [ "Manually via control knob", "false" ] }, { "ans": [ "Automatically by computer", "false" ] } ] }, { "ch": "What is the main principle of Propeller Synchrophasing?", "ansGr": [ { "ans": [ "Control the phase relationship between the propeller blades of the engines", "true" ] }, { "ans": [ "Keep propellers running at the same RPM", "false" ] }, { "ans": [ "Keep propeller engine at the same power", "false" ] } ] }, { "ch": "Manually synchronizing the engines during flight normally used for:", "ansGr": [ { "ans": [ "Light twin-engine aircraft", "true" ] }, { "ans": [ "Light single-engine aircraft", "false" ] }, { "ans": [ "Heavy twin-engine aircraft", "false" ] } ] }, { "ch": "Which components in cockpit are used for controlling the synchronizer/ synchro phaser?", "ansGr": [ { "ans": [ "Rotary ON/OFF switch and control knob", "true" ] }, { "ans": [ "ON/OFF push button and control knob", "false" ] }, { "ans": [ "Rotary ON/OFF switch and control push button", "false" ] } ] }, { "ch": "What is the function of Synchronizer coils inside propeller control unit (PCU) for SAAB Synchronizer/Synchro phaser system?", "ansGr": [ { "ans": [ "Producing magnetic fields that act on the flyweight assemblies to control RPM (round per minute)", "true" ] }, { "ans": [ "Producing mechanical force that act on the flyweight assemblies to control RPM (round per minute)", "false" ] }, { "ans": [ "Producing hydraulic force that act on the flyweight assemblies to control RPM (round per minute)", "false" ] } ] }, { "ch": "What are the main components of ANVS (Active Noise and Vibration Suppression) used to reduce noise level?", "ansGr": [ { "ans": [ "A series of microphones affixed to the exterior of the aircraft and a group of transmitters strategically placed around the fuselage", "true" ] }, { "ans": [ "A series of microphones affixed to the interior of the aircraft and a group of transmitters strategically placed around the fuselage", "false" ] }, { "ans": [ "A series of microphones affixed to the exterior of the aircraft and a group of transmitters strategically placed around the engines", "false" ] } ] }, { "ch": "What will occcur if the engines/ propellers are not perfectly synchronized in term of rpm?", "ansGr": [ { "ans": [ "Vibration and noise will occur", "true" ] }, { "ans": [ "Vibration and reducing thrust will occur", "false" ] }, { "ans": [ "Vibration and increasing drag will occur", "false" ] } ] }, { "ch": "How does the pilot manually synchronize the propeller when the aircraft is not equipped with synchronization devices?", "ansGr": [ { "ans": [ "By positioning the propeller control levers", "true" ] }, { "ans": [ "By positioning the propeller control push button", "false" ] }, { "ans": [ "By positioning the propeller control switch", "false" ] } ] }, { "ch": "Which is the principle of Type II synchronizing systems?", "ansGr": [ { "ans": [ "The system will compare the rpm (round per minute) of the engines and raise the speed of the engines running at a lower rpm", "true" ] }, { "ans": [ "The system will compare the rpm (round per minute) of the engines and reduce the speed of the engines running at a higher rpm", "false" ] }, { "ans": [ "The system will compare the rpms (round per minute) of the engines and raise the speed of the engines running at a lower rpm", "false" ] } ] }, { "ch": "What does FADEC stand for?", "ansGr": [ { "ans": [ "Full Authority Digital Engine Control", "true" ] }, { "ans": [ "Full Acess Digital Engine Control", "false" ] }, { "ans": [ "Fuel Authority Digital Engine Control", "false" ] } ] }, { "ch": "When will the FADEC system provide synchronization and synchrophasing automatically for propeller aircrafts?", "ansGr": [ { "ans": [ "The engines are operating in a constant speed mode", "true" ] }, { "ans": [ "The engines are operating in a take off mode", "false" ] }, { "ans": [ "The engines are operating in climb mode", "false" ] } ] }, { "ch": "What does the basic system use to determine and monitor the position of a target blade for each propeller?", "ansGr": [ { "ans": [ "Sensors", "true" ] }, { "ans": [ "Phonic wheels", "false" ] }, { "ans": [ "Angle meters", "false" ] } ] }, { "ch": "How will the propeller aircraft synchronize and synchrophase the propellers?", "ansGr": [ { "ans": [ "Manually or automatically", "true" ] }, { "ans": [ "Manually via control knob", "false" ] }, { "ans": [ "Automatically by computer", "false" ] } ] }, { "ch": "What is the main principle of Propeller Synchrophasing?", "ansGr": [ { "ans": [ "Control the phase relationship between the propeller blades of the engines", "true" ] }, { "ans": [ "Keep propellers running at the same RPM", "false" ] }, { "ans": [ "Keep propeller engine at the same power", "false" ] } ] }, { "ch": "Manually synchronizing the engines during flight normally used for:", "ansGr": [ { "ans": [ "Light twin-engine aircraft", "true" ] }, { "ans": [ "Light single-engine aircraft", "false" ] }, { "ans": [ "Heavy twin-engine aircraft", "false" ] } ] }, { "ch": "Which components in cockpit are used for controlling the synchronizer/ synchro phaser?", "ansGr": [ { "ans": [ "Rotary ON/OFF switch and control knob", "true" ] }, { "ans": [ "ON/OFF push button and control knob", "false" ] }, { "ans": [ "Rotary ON/OFF switch and control push button", "false" ] } ] }, { "ch": "What is the function of Synchronizer coils inside propeller control unit (PCU) for SAAB Synchronizer/Synchro phaser system?", "ansGr": [ { "ans": [ "Producing magnetic fields that act on the flyweight assemblies to control RPM (round per minute)", "true" ] }, { "ans": [ "Producing mechanical force that act on the flyweight assemblies to control RPM (round per minute)", "false" ] }, { "ans": [ "Producing hydraulic force that act on the flyweight assemblies to control RPM (round per minute)", "false" ] } ] }, { "ch": "What are the main components of ANVS (Active Noise and Vibration Suppression) used to reduce noise level?", "ansGr": [ { "ans": [ "A series of microphones affixed to the exterior of the aircraft and a group of transmitters strategically placed around the fuselage", "true" ] }, { "ans": [ "A series of microphones affixed to the interior of the aircraft and a group of transmitters strategically placed around the fuselage", "false" ] }, { "ans": [ "A series of microphones affixed to the exterior of the aircraft and a group of transmitters strategically placed around the engines", "false" ] } ] }, { "ch": "What are basic factors of propeller ice protection system?", "ansGr": [ { "ans": [ "Anti-icing system and de-icing system", "true" ] }, { "ans": [ "Anti-icing system and ice detecting system", "false" ] }, { "ans": [ "Anti-icing system and ice removing system", "false" ] } ] }, { "ch": "When are propeller anti-icing systems activated?", "ansGr": [ { "ans": [ "Before the formation of ice on the propeller", "true" ] }, { "ans": [ "During the formation of ice on the propeller", "false" ] }, { "ans": [ "After the formation of ice on the propeller", "false" ] } ] }, { "ch": "An electric propeller icing control system consists of:", "ansGr": [ { "ans": [ "An electrical energy source, a resistance heating element, system controls, and necessary wiring", "true" ] }, { "ans": [ "An electrical energy source, a resistance heating element, system controls, and necessary wiring", "false" ] }, { "ans": [ "An electrical energy source, a resistance heating element, system controls, and necessary wiring", "false" ] } ] }, { "ch": "Where are the heating elements mounted?", "ansGr": [ { "ans": [ "Internally or externally on the propeller spinner and blades", "true" ] }, { "ans": [ "Internally or externally on the propeller root blades", "false" ] }, { "ans": [ "Internally or externally on the propeller tip blades", "false" ] } ] }, { "ch": "How is propeller icing control accomplished?", "ansGr": [ { "ans": [ "By converting electrical energy to heat energy in the heating element", "true" ] }, { "ans": [ "By converting electrical energy to heat energy in brush block", "false" ] }, { "ans": [ "By converting electrical energy to heat energy in slip ring assembly", "false" ] } ] }, { "ch": "What is the brush block function?", "ansGr": [ { "ans": [ "It is used to transfer electricity to the slip ring", "true" ] }, { "ans": [ "It is used to transfer electricity to the ammeter", "false" ] }, { "ans": [ "It is used to transfer electricity to sequencing timer", "false" ] } ] }, { "ch": "Why is the propeller de-icing system used only when the propellers are rotating and for short test periods of time during the take-off check list or system inspection?", "ansGr": [ { "ans": [ "To prevent element overheating", "true" ] }, { "ans": [ "To save electrical energy", "false" ] }, { "ans": [ "To prevent hardware overload", "false" ] } ] }, { "ch": "Sequencing timers are used to energize the heating element circuits for periods of:", "ansGr": [ { "ans": [ "15 to 30 seconds", "true" ] }, { "ans": [ "30-60 seconds", "false" ] }, { "ans": [ "90-120 seconds", "false" ] } ] }, { "ch": "How is ice protection resevoir be refilled?", "ansGr": [ { "ans": [ "Checking the quantity indication by filling the tank to the 1/2 level and reading the gauge and rechecking the gauge when the tank is full", "true" ] }, { "ans": [ "Checking the quantity indication by filling the tank to the 3/4 level and reading the gauge and rechecking the gauge when the tank is full", "false" ] }, { "ans": [ "Checking the quantity indication by filling the tank to the 1/4 level and reading the gauge and rechecking the gauge when the tank is full", "false" ] } ] }, { "ch": "How do we do to verify fluid consumption?", "ansGr": [ { "ans": [ "Performing the flow test", "true" ] }, { "ans": [ "Performing the duration test", "false" ] }, { "ans": [ "Performing the pressure test", "false" ] } ] }, { "ch": "The typical electrical de-icing system includes:", "ansGr": [ { "ans": [ "An ON/OFF switch, an ammeter, a sequencing timer or cycling unit, a brush block and slip ring assembly, overshoes with heating elements, and the necessary wiring and hardware", "true" ] }, { "ans": [ "An ON/OFF switch, an ammeter, a sequencing timer or cycling unit, a brush block and slip ring assembly and the necessary wiring and hardware", "false" ] }, { "ans": [ "An ON/OFF switch, an ammeter, a sequencing timer or cycling unit, slip ring assembly, overshoes with heating elements, and the necessary wiring and hardware", "false" ] } ] }, { "ch": "How should the overshoes damages be repaired?", "ansGr": [ { "ans": [ "According to the manufacturer’s information", "true" ] }, { "ans": [ "According to the operator’s information", "false" ] }, { "ans": [ "No repair permitted for overshoes damages", "false" ] } ] }, { "ch": "Which type of check should be used after replacement of one or more de-icing boots?", "ansGr": [ { "ans": [ "A check of the dynamic balance of the propeller", "true" ] }, { "ans": [ "A check of the static balance of the propeller", "false" ] }, { "ans": [ "A check of the propeller track", "false" ] } ] }, { "ch": "Which are two common inspection methods used on propellers?", "ansGr": [ { "ans": [ "Visual inspection and tactile inspection", "true" ] }, { "ans": [ "Visual inspection and audible inspection", "false" ] }, { "ans": [ "Visual inspection and Etching inspection", "false" ] } ] }, { "ch": "A deep nick across the leading edge of a propeller blade may evolve into:", "ansGr": [ { "ans": [ "A crack and blade failure", "true" ] }, { "ans": [ "A deeper nick and blade need blended", "false" ] }, { "ans": [ "A small crack and blade need blended", "false" ] } ] }, { "ch": "What may adversely affect a propeller when it is exposed to high levels of heat, such as a fire?", "ansGr": [ { "ans": [ "The integrity of the propeller", "true" ] }, { "ans": [ "Changing the color of propeller", "false" ] }, { "ans": [ "Corrosion on surface of propeller", "false" ] } ] }, { "ch": "Which are common defects for wood propeller inspection?", "ansGr": [ { "ans": [ "Cracks, dents, warpage, glue failure, delamination, defects in the finish, and charring of the wood between the propeller and the flange due to loose propeller mounting bolts", "true" ] }, { "ans": [ "Cracks, corrosion, dents, warpage, glue failure, delamination, defects in the finish, and charring of the wood between the propeller and the flange due to loose propeller mounting bolts", "false" ] }, { "ans": [ "Cracks, lighting strike, dents, warpage, glue failure, delamination, defects in the finish, and charring of the wood between the propeller and the flange due to loose propeller mounting bolts", "false" ] } ] }, { "ch": "Dye penetrant inspections is used for:", "ansGr": [ { "ans": [ "Effective on flaws that extend to the surface", "true" ] }, { "ans": [ "Effective on flaws at subsurface", "false" ] }, { "ans": [ "Effective on flaws at subsurface and on the surface", "false" ] } ] }, { "ch": "What does magnetic particles process require?", "ansGr": [ { "ans": [ "A special light during the inspection", "true" ] }, { "ans": [ "A special chemical during the inspection", "false" ] }, { "ans": [ "A special liquid during the inspection", "false" ] } ] }, { "ch": "What is the diffirent between the non fluorescent and the fluorescent penetrant?", "ansGr": [ { "ans": [ "The non fluorescent penetrant works with ordinary lighting while the fluorescent penetrant requires a black light to perform a thorough investigation", "true" ] }, { "ans": [ "The non fluorescent penetrant works with ordinary lighting while the fluorescent penetrant requires a ultra violet light to perform a thorough investigation", "false" ] }, { "ans": [ "The non fluorescent penetrant works with ultra violet lighting while the fluorescent penetrant requires a black light to perform a thorough investigation", "false" ] } ] }, { "ch": "Composite blades need to be visually inspected for:", "ansGr": [ { "ans": [ "Nicks, gouges, loose material, erosion, cracks and debonded areas, and lightning strikes", "true" ] }, { "ans": [ "Nicks, gouges, loose material, corrosion, cracks and debonded areas, and lightning strikes", "false" ] }, { "ans": [ "Nicks, gouges, loose material, scrath, cracks and debonded areas, and lightning strikes", "false" ] } ] }, { "ch": "Which statement is correct about composite propeller inspection?", "ansGr": [ { "ans": [ "If an audible change is apparent, sounding hollow or dead, a debond or delamination is likely", "true" ] }, { "ans": [ "If an audible change is apparent, sounding hollow or dead, a crack is likely", "false" ] }, { "ans": [ "If an audible change is apparent, sounding hollow or dead, a loose material is likely", "false" ] } ] }, { "ch": "How are composite blades inspected for delaminations and debonds?", "ansGr": [ { "ans": [ "Using metal coin", "true" ] }, { "ans": [ "Using plastic hammer", "false" ] }, { "ans": [ "Using rubber tool", "false" ] } ] }, { "ch": "Which requirement for blade track during checking?", "ansGr": [ { "ans": [ "Each blade track should be within 1/16 inch (plus or minus) from the opposite blade’s track", "true" ] }, { "ans": [ "Each blade track should be within 5/16 inch (plus or minus) from the opposite blade’s track", "false" ] }, { "ans": [ "Each blade track should be within 9/16 inch (plus or minus) from the opposite blade’s track", "false" ] } ] }, { "ch": "How to check blade angle if the propeller is installed on the aircraft or is placed on the knife edge balancing stand?", "ansGr": [ { "ans": [ "Using a handheld protractor", "true" ] }, { "ans": [ "Using a blade tracking tool", "false" ] }, { "ans": [ "Using a handheld square ruler", "false" ] } ] }, { "ch": "When can the universal propeller protractor be used to check propeller blade angles?", "ansGr": [ { "ans": [ "The propeller is on a balancing stand or installed on the aircraft engine", "true" ] }, { "ans": [ "The propeller is on a balancing stand or installed in storage box", "false" ] }, { "ans": [ "The propeller is on a balancing stand or installed on bech test stand", "false" ] } ] }, { "ch": "Which are the main reasons of propeller vibration?", "ansGr": [ { "ans": [ "Balance, angle, or track problems", "true" ] }, { "ans": [ "Balance, angle, or lubrication problems", "false" ] }, { "ans": [ "Balance, angle, or turbulence problems", "false" ] } ] }, { "ch": "Which are types of propeller unbalance?", "ansGr": [ { "ans": [ "Static or dynamic unbalance", "true" ] }, { "ans": [ "Root and tip unbalance", "false" ] }, { "ans": [ "Angle and track unbalance", "false" ] } ] }, { "ch": "When is propeller static unbalance occur?", "ansGr": [ { "ans": [ "The center of gravity (CG) of the propeller is not aligned with the axis of rotation", "true" ] }, { "ans": [ "The center of gravity (CG) of the propeller is not in the same plane of rotation", "false" ] }, { "ans": [ "The center of gravity (CG) of the propeller is not with the same angle of rotation", "false" ] } ] }, { "ch": "When is propeller dynamic ubalance occur?", "ansGr": [ { "ans": [ "The CG of similar propeller elements, such as blades or counterweights, does not follow in the same plane of rotation", "true" ] }, { "ans": [ "The CG of similar propeller elements, such as blades or counterweights, does not follow in the same axis of rotation", "false" ] }, { "ans": [ "The CG of similar propeller elements, such as blades or counterweights, does not follow in the same angle of rotation", "false" ] } ] }, { "ch": "Where do we install two accelerometers or velocimeters on the engine for balancing procedure?", "ansGr": [ { "ans": [ "One near the propeller and another on or near the accessory case", "true" ] }, { "ans": [ "One near the propeller and another on or near the propeller hub", "false" ] }, { "ans": [ "One near the propeller and another on or near the propeller spinner", "false" ] } ] }, { "ch": "What does the dynamic balancer analyzer calculate and suggest to reduce vibration?", "ansGr": [ { "ans": [ "The balancing weight and location of weight installation", "true" ] }, { "ans": [ "The number of balancing weights", "false" ] }, { "ans": [ "The location distribution of balancing weight installation", "false" ] } ] }, { "ch": "Where is correct position to pump grease when lubricating propeller blade and hub?", "ansGr": [ { "ans": [ "The fitting located nearest the leading edge of the blade on a tractor installation, or nearest the trailing edge on a pusher installation", "true" ] }, { "ans": [ "The fitting located nearest the trailing edge on a pusher installation, or root of blade", "false" ] }, { "ans": [ "The fitting located nearest the leading edge of the blade on a tractor installation, or root of the blade", "false" ] } ] }, { "ch": "For charging the propeller air dome, correct charge pressure depends on", "ansGr": [ { "ans": [ "Temperature", "true" ] }, { "ans": [ "Humidity", "false" ] }, { "ans": [ "Propeller material", "false" ] } ] }, { "ch": "Tachometers should be accurate:", "ansGr": [ { "ans": [ "Within ± 10 rpm (round per minute)", "true" ] }, { "ans": [ "Within ± 50 rpm (round per minute)", "false" ] }, { "ans": [ "Within ± 100 rpm (round per minute)", "false" ] } ] }, { "ch": "How is the area of dressing from the leading and trailing edges of the propeller for repairing nicks and gouges?", "ansGr": [ { "ans": [ "It is 10 times the depth", "true" ] }, { "ans": [ "It is 20 times the depth", "false" ] }, { "ans": [ "It is 30 times the depth", "false" ] } ] }, { "ch": "How are the nonferrous hubs and components stripped of protective finishes and inspected for cracks?", "ansGr": [ { "ans": [ "Using a liquid penetrant inspection (LPI) procedure", "true" ] }, { "ans": [ "Using a magnetic particle inspection (MPI) procedure", "false" ] }, { "ans": [ "Using a Eddy current testing procedure", "false" ] } ] }, { "ch": "What should we do after final assembly of blades and hubs?", "ansGr": [ { "ans": [ "The high and low pitch blade angles on constant-speed propellers are checked for proper operation and leaks", "true" ] }, { "ans": [ "The high pitch blade angles on constant-speed propellers are checked for proper operation and leaks", "false" ] }, { "ans": [ "The low pitch blade angles on constant-speed propellers are checked for leaks by cycling the propeller", "false" ] } ] }, { "ch": "What should we check if a propeller is hunting?", "ansGr": [ { "ans": [ "1. Governor,\n2. Fuel control, and\n3. Synchrophaser or synchronizer, if equipped.", "true" ] }, { "ans": [ "1. Governor,\n2. Lubrication system, and\n3. Synchrophaser or synchronizer, if equipped.", "false" ] }, { "ans": [ "1. Governor,\n2. Tachometer, and\n3. Synchrophaser or synchronizer, if equipped.", "false" ] } ] }, { "ch": "An increase in engine speed while descending or increasing airspeed with a non-feathering propeller could be:", "ansGr": [ { "ans": [ "1. The governor not increasing oil volume in the propeller\n2. Engine transfer bearing leaking excessively\n3. Excessive friction in blade bearings or pitch changing mechanism", "true" ] }, { "ans": [ "1. The governor not increasing oil volume in the propeller\n2. Fuel control unit fail\n3. Excessive friction in blade bearings or pitch changing mechanism", "false" ] }, { "ans": [ "1. The governor not increasing oil volume in the propeller\n2. Excessive friction in Engine transfer bearing\n3. Excessive friction in blade bearings or pitch changing mechanism", "false" ] } ] }, { "ch": "How is the storage status of an aircraft listed in?", "ansGr": [ { "ans": [ "The storage status of an aircraft is listed in three categories: flyable, temporary, and indefinite", "true" ] }, { "ans": [ "The storage status of an aircraft is listed in three categories: flyable, temporary, and permanent", "false" ] }, { "ans": [ "The storage status of an aircraft is listed in three categories: flyable, permanent and indefinite", "false" ] } ] }, { "ch": "What is the purpose of the propeller period greasing?", "ansGr": [ { "ans": [ "Protecting the propeller from corrosion", "true" ] }, { "ans": [ "Protecting the propeller from crack", "false" ] }, { "ans": [ "Protecting the propeller from paint peeling", "false" ] } ] }, { "ch": "How is propeller temporary storage generally defined?", "ansGr": [ { "ans": [ "Temporary storage is generally defined as non-use of the aircraft for 90 days", "true" ] }, { "ans": [ "Temporary storage is generally defined as non-use of the aircraft for 180 days", "false" ] }, { "ans": [ "Temporary storage is generally defined as non-use of the aircraft for 30 days", "false" ] } ] }, { "ch": "How often is the propeller greasing required for temporary storage?", "ansGr": [ { "ans": [ "The propeller requires greasing every 6 months", "true" ] }, { "ans": [ "The propeller requires greasing every 12 months", "false" ] }, { "ans": [ "The propeller requires greasing every 1 months", "false" ] } ] }, { "ch": "Which factors does manufacturer recommend for propeller cleaning?", "ansGr": [ { "ans": [ "Cleaning fluids and methods", "true" ] }, { "ans": [ "Cleaning fluids and tools", "false" ] }, { "ans": [ "Cleaning environments and methods", "false" ] } ] }, { "ch": "Which are the techniques for protecting propeller components for long term storage and preservation?", "ansGr": [ { "ans": [ "Apply or reapply a plating process, protective chemical, physical covering", "true" ] }, { "ans": [ "Apply or reapply a plating process, protective grease, physical covering", "false" ] }, { "ans": [ "Apply or reapply a plating process, protective gas, physical covering", "false" ] } ] }, { "ch": "For long term storage and preservation, the hub should be:", "ansGr": [ { "ans": [ "Filled with preservative oil", "true" ] }, { "ans": [ "Protected by thin layer grease", "false" ] }, { "ans": [ "Covered by nylon layer", "false" ] } ] }, { "ch": "When may propeller governors and accumulators remain on the engine?", "ansGr": [ { "ans": [ "During indefinite storage", "true" ] }, { "ans": [ "During flyable storage", "false" ] }, { "ans": [ "During temporary storage", "false" ] } ] }, { "ch": "How should governors and accumulators be stored during preservation?", "ansGr": [ { "ans": [ "Inserting the governor and accumulator in separate vacuum storage bags, removing the air, and sealing the bags", "true" ] }, { "ans": [ "Inserting the governor and accumulator in separate vacuum storage bags, adding fresh the air, and sealing the bags", "false" ] }, { "ans": [ "Inserting the governor and accumulator in separate vacuum storage bags, removing the air, and adding nitrogen", "false" ] } ] }, { "ch": "Controllable-pitch propellers that are in storage for periods exceeding five years may require:", "ansGr": [ { "ans": [ "The replacement of rubber parts and an internal inspection for corrosion before returning the propeller to service", "true" ] }, { "ans": [ "The replacement of metal parts and an internal inspection for corrosion before returning the propeller to service", "false" ] }, { "ans": [ "The replacement of rubber parts and an external inspection for crack before returning the propeller to service", "false" ] } ] }, { "ch": "Why should the propellerbe cycled several times before returning to service?", "ansGr": [ { "ans": [ "To flush out air in the system and traces of preservation oil", "true" ] }, { "ans": [ "To flush out air bubble in preservation oil", "false" ] }, { "ans": [ "To flush out air in the system and traces of humidity in oil system", "false" ] } ] }, { "ch": "What should we do after the installation of the propeller?", "ansGr": [ { "ans": [ "The engine should be started and tested", "true" ] }, { "ans": [ "The engine should be dry crank for leak check", "false" ] }, { "ans": [ "The engine should be wet crank for lubricating", "false" ] } ] } ]