[ { "part": "M11.6 ATA 24", "ch": "What is the purpose of the battery small connector?", "ansGr": [ { "ans": [ "To control battery & its status", "true" ] }, { "ans": [ "To deliver high power to bus sytem", "false" ] }, { "ans": [ "To protect high power to bus system", "false" ] } ] }, { "ch": "What is the purpose of generator control unit (GCU)?", "ansGr": [ { "ans": [ "Voltage regulation & frequency control", "true" ] }, { "ans": [ "Load management", "false" ] }, { "ans": [ "Phases control", "false" ] } ] }, { "ch": "Classify battery?", "ansGr": [ { "ans": [ "Primary cell battery & secondary cell battery", "true" ] }, { "ans": [ "Primary cell battery", "false" ] }, { "ans": [ "Lead acid & secondary cell batteries", "false" ] } ] }, { "ch": "What is the battery?", "ansGr": [ { "ans": [ "Battery is some cells connect together", "true" ] }, { "ans": [ "Battery is the cell", "false" ] }, { "ans": [ "Battery has 12 cells", "false" ] } ] }, { "ch": "How many electrodes are there in a cell battery?", "ansGr": [ { "ans": [ "2", "true" ] }, { "ans": [ "12", "false" ] }, { "ans": [ "24", "false" ] } ] }, { "ch": "What is the separator in a cell battery?", "ansGr": [ { "ans": [ "Keep positive & negative source separated", "true" ] }, { "ans": [ "Keep electrolyte for compensation", "false" ] }, { "ans": [ "Separation between cells", "false" ] } ] }, { "ch": "What is cell battery vent-plug for?", "ansGr": [ { "ans": [ "Release gases & electrolyte leaks", "true" ] }, { "ans": [ "Protect from over pressure in the cell", "false" ] }, { "ans": [ "Protect electrolyte leaked", "false" ] } ] }, { "ch": "How many volts for each cell in Ni-Cd battery is?", "ansGr": [ { "ans": [ "1.2 volts", "true" ] }, { "ans": [ "12 volts", "false" ] }, { "ans": [ "2 volts", "false" ] } ] }, { "ch": "What is the battery charger?", "ansGr": [ { "ans": [ "The unit monitors the condition of the battery", "true" ] }, { "ans": [ "unit to control the battery charge", "false" ] }, { "ans": [ "unit to monitor the battery short circuit", "false" ] } ] }, { "ch": "What is ventilation system in Ni-Cd battery for?", "ansGr": [ { "ans": [ "Control battery temperature", "true" ] }, { "ans": [ "Control electrolyte level", "false" ] }, { "ans": [ "Control battery from too low temperature", "false" ] } ] }, { "ch": "Where is RAT (Ram Air Turbine) located in aircraft?", "ansGr": [ { "ans": [ "Typically inside the fuselage", "true" ] }, { "ans": [ "On the wing tip", "false" ] }, { "ans": [ "On the engine lowest point", "false" ] } ] }, { "ch": "What is hot battery bus?", "ansGr": [ { "ans": [ "Bus is wired from battery directly", "true" ] }, { "ans": [ "Bus is heated", "false" ] }, { "ans": [ "Bus is never overloaded", "false" ] } ] }, { "ch": "How to charge battery?", "ansGr": [ { "ans": [ "By DC", "true" ] }, { "ans": [ "By AC", "false" ] }, { "ans": [ "By whatever DC or AC", "false" ] } ] }, { "ch": "How to deliver electric from external cart to the aircraft?", "ansGr": [ { "ans": [ "Electrical solenoid used to connect external power to the buses", "true" ] }, { "ans": [ "always deliver electric when connect external cart", "false" ] }, { "ans": [ "External cart control unit used to connect external power to the buses", "false" ] } ] }, { "ch": "What is stand-by power in the large aircraft?", "ansGr": [ { "ans": [ "Emergency power when the main sources failed", "true" ] }, { "ans": [ "Emergency power from DC buses", "false" ] }, { "ans": [ "Batteries", "false" ] } ] }, { "ch": "What is the purpose of the battery large connector?", "ansGr": [ { "ans": [ "Deliver high power to bus sytem", "true" ] }, { "ans": [ "Control battery status signal", "false" ] }, { "ans": [ "Control battery", "false" ] } ] }, { "ch": "What is the IDG (Integrated Drive Generator)?", "ansGr": [ { "ans": [ "The generator is driven fixed velocity & integrated in constant speed drive unit", "true" ] }, { "ans": [ "The generator is driven fixed velocity by engine dedicated gearbox shaft", "false" ] }, { "ans": [ "The generator is driven fixed velocity by constant speed drive unit", "false" ] } ] }, { "ch": "How does circuit breaker protect the circuit?", "ansGr": [ { "ans": [ "It opens the circuit", "true" ] }, { "ans": [ "It closes the circuit", "false" ] }, { "ans": [ "It's opens the circuit even inside mechanism is OFF", "false" ] } ] }, { "ch": "What principle does battery base on?", "ansGr": [ { "ans": [ "Electrochemical reaction", "true" ] }, { "ans": [ "Electromagnetic reaction", "false" ] }, { "ans": [ "Ionization reaction", "false" ] } ] }, { "ch": "What is primary cell battery?", "ansGr": [ { "ans": [ "Non-recharable battery", "true" ] }, { "ans": [ "Battery with cathode made of Zinc", "false" ] }, { "ans": [ "Rechargable battery", "false" ] } ] }, { "ch": "What charge in the cathode terminal in battery cell?", "ansGr": [ { "ans": [ "Positive", "true" ] }, { "ans": [ "Neutral", "false" ] }, { "ans": [ "Negative", "false" ] } ] }, { "ch": "What charge in the anode terminal in battery cell?", "ansGr": [ { "ans": [ "Negative", "true" ] }, { "ans": [ "Neutral", "false" ] }, { "ans": [ "Positiive", "false" ] } ] }, { "ch": "How many volts does a cell in battery charge?", "ansGr": [ { "ans": [ "2 volts", "true" ] }, { "ans": [ "24 volts", "false" ] }, { "ans": [ "12 volts", "false" ] } ] }, { "ch": "What is battery open-circuit voltage?", "ansGr": [ { "ans": [ "Voltage of the battery when it is not connected to a load", "true" ] }, { "ans": [ "Voltage of the battery when it is connected to a load", "false" ] }, { "ans": [ "Voltage of the battery when it is in-charged", "false" ] } ] }, { "ch": "What happen for electrolyte during flooded lead acid in charged?", "ansGr": [ { "ans": [ "Water loss", "true" ] }, { "ans": [ "Electrolyte is no changed", "false" ] }, { "ans": [ "water raised", "false" ] } ] }, { "ch": "What material is made of plates in flooded lead acid battery?", "ansGr": [ { "ans": [ "Lead", "true" ] }, { "ans": [ "Iron", "false" ] }, { "ans": [ "Copper", "false" ] } ] }, { "ch": "How to protect postive & negative plates from touching to each other inside the cell?", "ansGr": [ { "ans": [ "Separator", "true" ] }, { "ans": [ "keep both postive & negative plates a distance", "false" ] }, { "ans": [ "keep cells separated from each other", "false" ] } ] }, { "ch": "How does aircraft attitude affect to battery vent plug?", "ansGr": [ { "ans": [ "Attitude has no effect to battery vent plug", "true" ] }, { "ans": [ "Upside-down attitude causes electrolyte be spilled out", "false" ] }, { "ans": [ "Exessive roll causes electrolyte be spilled roll", "false" ] } ] }, { "ch": "What is valve-reguated lead-acid battery?", "ansGr": [ { "ans": [ "Battery with no free electrolyte", "true" ] }, { "ans": [ "Battery with filled electrolyte", "false" ] }, { "ans": [ "Battery is non-rechargeable", "false" ] } ] }, { "ch": "What result when sealed lead-acid battery being charged?", "ansGr": [ { "ans": [ "No water loss", "true" ] }, { "ans": [ "Water loss", "false" ] }, { "ans": [ "Oxygen & hydrogen are gasious", "false" ] } ] }, { "ch": "How is about water loss during sealed lead-acid charge?", "ansGr": [ { "ans": [ "Very minor", "true" ] }, { "ans": [ "Major loss. Must fill more water", "false" ] }, { "ans": [ "Major loss. Must monitor water level", "false" ] } ] }, { "ch": "Is Nikel-Cadimium battery in aircraft sealed type or flooded type?", "ansGr": [ { "ans": [ "Flooded type", "true" ] }, { "ans": [ "Sealed type", "false" ] }, { "ans": [ "Partial sealed type", "false" ] } ] }, { "ch": "How does ambient temperature affect to Ni-Cd battery capacity?", "ansGr": [ { "ans": [ "Increasing temperature from its limit reduces battery capacity", "true" ] }, { "ans": [ "Increasing tempearature from its limit does not change battery capacity", "false" ] }, { "ans": [ "Increasing tempearature from limits may raise battery capacity", "false" ] } ] }, { "ch": "What is called battery thermal runaway?", "ansGr": [ { "ans": [ "Thermal runaway combines high tempearature & over charging", "true" ] }, { "ans": [ "Thermal runaway is overcharging situation", "false" ] }, { "ans": [ "Thermal runaway is very hign temperature", "false" ] } ] }, { "ch": "How does ions flow when battery is in charged?", "ansGr": [ { "ans": [ "Ions move from cathode to anode", "true" ] }, { "ans": [ "Ions move from anode to cathode", "false" ] }, { "ans": [ "Ions do not move when battery is charged", "false" ] } ] }, { "ch": "What type flooded or sealed battery is for Lithium battery?", "ansGr": [ { "ans": [ "Sealed battery", "true" ] }, { "ans": [ "Flooded battery", "false" ] }, { "ans": [ "Lithium battery is new technology not belongs to sealed nor flooded type", "false" ] } ] }, { "ch": "Is battery installation for Boeing & Airbus manufactures different?", "ansGr": [ { "ans": [ "Similar", "true" ] }, { "ans": [ "Identical", "false" ] }, { "ans": [ "Different", "false" ] } ] }, { "ch": "What does RAT (Ram Air Turbine) deploy for?", "ansGr": [ { "ans": [ "For cover electrical power for flight control & instruments", "true" ] }, { "ans": [ "Cover electrical power for charge batteries", "false" ] }, { "ans": [ "Cover electrical power for whole flight", "false" ] } ] }, { "ch": "What does battery thermal switch function?", "ansGr": [ { "ans": [ "To interrupt charging if battery or its changer is too hot", "true" ] }, { "ans": [ "To interrupt battery when battery is too hot during discharge", "false" ] }, { "ans": [ "To interrupt discharging if battery is too hot", "false" ] } ] }, { "ch": "Is battery charging available when emergency case?", "ansGr": [ { "ans": [ "No", "true" ] }, { "ans": [ "Yes", "false" ] }, { "ans": [ "Yes, after power checked", "false" ] } ] }, { "ch": "Will battery chagre when refuelling?", "ansGr": [ { "ans": [ "No", "true" ] }, { "ans": [ "Yes", "false" ] }, { "ans": [ "Yes, after power checked", "false" ] } ] }, { "ch": "Which AC generators are typically equipped in the large aircraft?", "ansGr": [ { "ans": [ "Main AC generators, APU AC generator & emergency generator", "true" ] }, { "ans": [ "Main AC generators, APU AC generator", "false" ] }, { "ans": [ "Main AC generators, APU AC generator, emergency generator, static inverter", "false" ] } ] }, { "ch": "What is bus power control?", "ansGr": [ { "ans": [ "It controls electrical distribution between the various busses", "true" ] }, { "ans": [ "It controls electrical distribution between main generators", "false" ] }, { "ans": [ "It controls each main generator", "false" ] } ] }, { "ch": "How to tie power from main generator to its circuit?", "ansGr": [ { "ans": [ "By generator contactor", "true" ] }, { "ans": [ "By GCU (Generator Control Unit)", "false" ] }, { "ans": [ "By generator relays", "false" ] } ] }, { "ch": "How does BPCU (Bus Power Control Unit) monitor electrical system?", "ansGr": [ { "ans": [ "By current transformer", "true" ] }, { "ans": [ "By sensors", "false" ] }, { "ans": [ "By communication with GCU (Generator Control Unit)", "false" ] } ] }, { "ch": "How to cool the generator?", "ansGr": [ { "ans": [ "Cooled by oil", "true" ] }, { "ans": [ "Cooled by fuel", "false" ] }, { "ans": [ "Cooled by water", "false" ] } ] }, { "ch": "How many controls are for handle the DC generator?", "ansGr": [ { "ans": [ "Electro-mechanical & solid state type controls", "true" ] }, { "ans": [ "Mechanical & solid state type controls", "false" ] }, { "ans": [ "Electro-mechanical & Electronic type controls", "false" ] } ] }, { "ch": "How many type(s) of voltage regulator is (are) there in DC alterator?", "ansGr": [ { "ans": [ "Vibrating relay & solid state types", "true" ] }, { "ans": [ "solid state type", "false" ] }, { "ans": [ "Vibrating relay type", "false" ] } ] }, { "ch": "What type of regulator is typically applied in light aircraft?", "ansGr": [ { "ans": [ "Alternator Control Unit (ACU)", "true" ] }, { "ans": [ "GCU (Generator Control Unit)", "false" ] }, { "ans": [ "Bus Power Control Unit (BPCU)", "false" ] } ] }, { "ch": "How many concepts for keep aircraft electrical system be reliable?", "ansGr": [ { "ans": [ "2", "true" ] }, { "ans": [ "3", "false" ] }, { "ans": [ "1", "false" ] } ] }, { "ch": "How is about carbon stack & voltage coil connection in carbon pile type regulator?", "ansGr": [ { "ans": [ "Carbon stack series with filed & voltage coil parallels with output", "true" ] }, { "ans": [ "Carbon stack parallels with filed & voltage coil parallels with output", "false" ] }, { "ans": [ "Carbon stack parallels with filed & voltage coil series with output", "false" ] } ] }, { "ch": "Which DC alternator or DC generator is more efficient?", "ansGr": [ { "ans": [ "DC alternator", "true" ] }, { "ans": [ "DC generator", "false" ] }, { "ans": [ "Both are efficient", "false" ] } ] }, { "ch": "What is advantage of static inverter rather than rotary inverters?", "ansGr": [ { "ans": [ "Neither moving part & cooling required", "true" ] }, { "ans": [ "No moving part is required", "false" ] }, { "ans": [ "No cooling is required", "false" ] } ] }, { "ch": "How many turns are there in secondary coil if transformer is step down?", "ansGr": [ { "ans": [ "Less than primary coil", "true" ] }, { "ans": [ "More than primary coil", "false" ] }, { "ans": [ "Equal to each other", "false" ] } ] }, { "ch": "What risk is for NiCd battery under thermal runaway effect if charged by constant voltage method?", "ansGr": [ { "ans": [ "Battery is damaged", "true" ] }, { "ans": [ "Battery is disconnected from charging", "false" ] }, { "ans": [ "Battery is reduced its capacity", "false" ] } ] }, { "ch": "Difference between flooded battery & sealed battery?", "ansGr": [ { "ans": [ "Sealed battery has no free electrolyte", "true" ] }, { "ans": [ "Sealed battery has free electrolyte", "false" ] }, { "ans": [ "Flooded battery has no free electrolyte", "false" ] } ] }, { "ch": "Difference between flooded battery & sealed battery?", "ansGr": [ { "ans": [ "Flooded battery has filled electrolyte", "true" ] }, { "ans": [ "Sealed battery has free electrolyte", "false" ] }, { "ans": [ "Flooded battery has no free electrolyte", "false" ] } ] }, { "ch": "Difference between primary cell battery & secondary cell battery?", "ansGr": [ { "ans": [ "Secondary cell battery is rechargable", "true" ] }, { "ans": [ "Primary cell battery is rechargable", "false" ] }, { "ans": [ "Secondary cell battery is non-rechargable", "false" ] } ] }, { "ch": "What will happen when charging primary cell battery?", "ansGr": [ { "ans": [ "Battery is defective", "true" ] }, { "ans": [ "Battery is charging", "false" ] }, { "ans": [ "Cell electrolyte is raised", "false" ] } ] }, { "ch": "Describle secondary cell battery construction?", "ansGr": [ { "ans": [ "There are many cells which each consists positive & nagetive electrodes connect to each other", "true" ] }, { "ans": [ "There is one cell which has positive & negative electrodes", "false" ] }, { "ans": [ "There is one cell which has positive & negative electrodes & electrolyte", "false" ] } ] }, { "ch": "How many cells needed for an output 12V of lead acid battery?", "ansGr": [ { "ans": [ "6 cells in series", "true" ] }, { "ans": [ "6 cells in parallel", "false" ] }, { "ans": [ "one cell 12V", "false" ] } ] }, { "ch": "What is gas escaped from cells in the flooded lead acid battery?", "ansGr": [ { "ans": [ "Oxygen at positive plates", "true" ] }, { "ans": [ "Hydogen at positive plates", "false" ] }, { "ans": [ "No gas escaped from the cell", "false" ] } ] }, { "ch": "What is gas escaped from cells in the flooded lead acid battery?", "ansGr": [ { "ans": [ "No gas escaped from the cell", "true" ] }, { "ans": [ "Oxygen at negative plates", "false" ] }, { "ans": [ "Hydogen at negative plates", "false" ] } ] }, { "ch": "What action will be when flooded lead acid is in-charged?", "ansGr": [ { "ans": [ "Monitor electrolyte", "true" ] }, { "ans": [ "Add more acid", "false" ] }, { "ans": [ "Monitor lead electrode wearing rate", "false" ] } ] }, { "ch": "What material is made of positive plate in flooded lead acid battery?", "ansGr": [ { "ans": [ "Lead peroxide", "true" ] }, { "ans": [ "Lead", "false" ] }, { "ans": [ "Lead & iron alloy", "false" ] } ] }, { "ch": "What material is made of negative plate in flooded lead acid battery?", "ansGr": [ { "ans": [ "Lead", "true" ] }, { "ans": [ "Lead peroxide", "false" ] }, { "ans": [ "Lead & iron alloy", "false" ] } ] }, { "ch": "What is the purpose of seperator in a cell battery?", "ansGr": [ { "ans": [ "To keep postive & negative plates from short circuit", "true" ] }, { "ans": [ "To collect more postive ions in electrolyte", "false" ] }, { "ans": [ "To isolate ions from touching electrodes", "false" ] } ] }, { "ch": "How does cell battery protect from electrolyte leak when aircraft is change attitude?", "ansGr": [ { "ans": [ "A likely conic shape lead weight inside cell seals electrolyte from leakage", "true" ] }, { "ans": [ "When aircraft changes attitude, leak must be controlled", "false" ] }, { "ans": [ "Vent plug is made of rubber which keep minimum electrolyte leakage", "false" ] } ] }, { "ch": "Where is the enviroment for ions to exchange in the sealed lead-acid battery?", "ansGr": [ { "ans": [ "Environment is the electrolyte which is absorbed into glass-mat separator", "true" ] }, { "ans": [ "Environment is electrolyte fluid", "false" ] }, { "ans": [ "Environment is dry space inside & between electrodes", "false" ] } ] }, { "ch": "Where is the enviroment for ions exchange in flooded lead-acid battery?", "ansGr": [ { "ans": [ "Environment is electrolyte fluid", "true" ] }, { "ans": [ "Environment is the dry space & between cell electrodes", "false" ] }, { "ans": [ "Environment is electrolyte which is absorbed into glass-mat separator", "false" ] } ] }, { "ch": "Why sealed lead acid battery wil not loss water during charge?", "ansGr": [ { "ans": [ "Oxygen & hydrogen will not being gases", "true" ] }, { "ans": [ "No water added then no water lost", "false" ] }, { "ans": [ "Because it's sealed", "false" ] } ] }, { "ch": "There is small water loss for sealed lead-acid battery. What is the cause?", "ansGr": [ { "ans": [ "Self discharge reactions", "true" ] }, { "ans": [ "Charging situation", "false" ] }, { "ans": [ "Discharging situation", "false" ] } ] }, { "ch": "How to connect Lithium cells to be battery of 24 -33V?", "ansGr": [ { "ans": [ "8 cells in series", "true" ] }, { "ans": [ "15 cells in series", "false" ] }, { "ans": [ "20 cells in series", "false" ] } ] }, { "ch": "What condition of battery temperature does battery charger protect?", "ansGr": [ { "ans": [ "Low & high tempearature", "true" ] }, { "ans": [ "High temperature", "false" ] }, { "ans": [ "Low temperature", "false" ] } ] }, { "ch": "Battery charger detects overheat signal. How is about system response?", "ansGr": [ { "ans": [ "Battery charger isolates the battery & send fault signal to load management system", "true" ] }, { "ans": [ "Battery charger controls battery works in degraded mode", "false" ] }, { "ans": [ "It give options for user to choose if continue to use battery", "false" ] } ] }, { "ch": "Which range of ambient tempearature does Ni-Cd battery can work normally?", "ansGr": [ { "ans": [ "15 - 32 degree of Celcius", "true" ] }, { "ans": [ "over 90 degree of Fahrenheit", "false" ] }, { "ans": [ "under 60 degree of Fahrenheit", "false" ] } ] }, { "ch": "What is following may happen If a cell is shorted inside Ni-Cd battery?", "ansGr": [ { "ans": [ "Current is excessive & temperature increases", "true" ] }, { "ans": [ "Current is very low & temperature decreases", "false" ] }, { "ans": [ "Current is very high & temperature decreases", "false" ] } ] }, { "ch": "What are advantages of Lithium battery rather conventional batteries?", "ansGr": [ { "ans": [ "High capacity & light weight", "true" ] }, { "ans": [ "High capacity & high weight", "false" ] }, { "ans": [ "Light weight", "false" ] } ] }, { "ch": "How many volts is typically for each cell in Lithium battery?", "ansGr": [ { "ans": [ "3.7 volts", "true" ] }, { "ans": [ "5 volts", "false" ] }, { "ans": [ "1.2 volts", "false" ] } ] }, { "ch": "How is battery backup during flight in electrical emergency case?", "ansGr": [ { "ans": [ "Batterie supplies standby power until system is recovered", "true" ] }, { "ans": [ "Battery supplies whole system until landing", "false" ] }, { "ans": [ "Battery supplies Ram Air Turbine deployment", "false" ] } ] }, { "ch": "Where does signal in the battery large connector go?", "ansGr": [ { "ans": [ "Conncet to bus system", "true" ] }, { "ans": [ "Connect to battery charger", "false" ] }, { "ans": [ "Connect to remain battery", "false" ] } ] }, { "ch": "Where does signal in the battery small connector go?", "ansGr": [ { "ans": [ "Connect to battery charger", "true" ] }, { "ans": [ "Connect to bus system", "false" ] }, { "ans": [ "Connect to remain battery", "false" ] } ] }, { "ch": "How hot battery bus is configured?", "ansGr": [ { "ans": [ "It is wired directly from battery", "true" ] }, { "ans": [ "It is wired with tempearature sensor", "false" ] }, { "ans": [ "It is wired to battery charger", "false" ] } ] }, { "ch": "How to control batttery charging available or unable base on configuration?", "ansGr": [ { "ans": [ "By control relays", "true" ] }, { "ans": [ "By contactors", "false" ] }, { "ans": [ "By central processor", "false" ] } ] }, { "ch": "How many power panels in B777 electrical load management system (ELMS)?", "ansGr": [ { "ans": [ "7", "true" ] }, { "ans": [ "5", "false" ] }, { "ans": [ "6", "false" ] } ] }, { "ch": "What is purpose of APU AC generator?", "ansGr": [ { "ans": [ "Backup for any failed main AC generator", "true" ] }, { "ans": [ "Generator redundancy", "false" ] }, { "ans": [ "To supply more electric for aircraft", "false" ] } ] }, { "ch": "How to supply power if all AC generators failed?", "ansGr": [ { "ans": [ "Batteries supply to essential systems", "true" ] }, { "ans": [ "Emergency generator supplies to essential systems", "false" ] }, { "ans": [ "Static inverters supply to essential systems", "false" ] } ] }, { "ch": "How many AC generators are driven by each engine B777?", "ansGr": [ { "ans": [ "Two", "true" ] }, { "ans": [ "One", "false" ] }, { "ans": [ "Four", "false" ] } ] }, { "ch": "How to power main AC generator?", "ansGr": [ { "ans": [ "Engine shaft", "true" ] }, { "ans": [ "Hydraulic motor", "false" ] }, { "ans": [ "Ram air", "false" ] } ] }, { "ch": "How to power AC emergency generator in Airbus aircraft?", "ansGr": [ { "ans": [ "Hydraulic motor", "true" ] }, { "ans": [ "Engine shaft", "false" ] }, { "ans": [ "Constant Speed Drive", "false" ] } ] }, { "ch": "Which one following controls electrical distribution?", "ansGr": [ { "ans": [ "BPCU (Bus Power Control Unit)", "true" ] }, { "ans": [ "GCU (Generator Control Unit)", "false" ] }, { "ans": [ "Electrical Load Management System (ELMS)", "false" ] } ] }, { "ch": "Which one following controls AC generator?", "ansGr": [ { "ans": [ "GCU (Generator Control Unit)", "true" ] }, { "ans": [ "BPCU (Bus Power Control Unit)", "false" ] }, { "ans": [ "Generator Breaker (GB)", "false" ] } ] }, { "ch": "How does generator breaker (GB) work when generator control unit detects overload?", "ansGr": [ { "ans": [ "Trip to isolate its generator circuit", "true" ] }, { "ans": [ "Close to connect power to main generator circuit", "false" ] }, { "ans": [ "Overload is not GB functions", "false" ] } ] }, { "ch": "What is principle of current transformer?", "ansGr": [ { "ans": [ "Induced voltage is measured without touching main cables", "true" ] }, { "ans": [ "Voltage is measured by tapping from main cables", "false" ] }, { "ans": [ "Electromechanical effect", "false" ] } ] }, { "ch": "Which LRU does BPCU control?", "ansGr": [ { "ans": [ "BTB (Bus Tie Breaker)", "true" ] }, { "ans": [ "GB (Generator Breaker)", "false" ] }, { "ans": [ "GC (Generator Contactor)", "false" ] } ] }, { "ch": "Comparision between BPCU (Bus Power Control Unit) & GCU (Generator Control Unit)?", "ansGr": [ { "ans": [ "Same in nature", "true" ] }, { "ans": [ "One is for loads while one is for source", "false" ] }, { "ans": [ "Not same to each other", "false" ] } ] }, { "ch": "What is advantages of brushless generator?", "ansGr": [ { "ans": [ "Less maintenance required & faithful", "true" ] }, { "ans": [ "Light weight", "false" ] }, { "ans": [ "Low cost", "false" ] } ] }, { "ch": "What is the difference between brushed & brushless generator?", "ansGr": [ { "ans": [ "Brushless generator first stage rotor is permanent magnet", "true" ] }, { "ans": [ "Brushless generator first stage rotor is winding", "false" ] }, { "ans": [ "Brushless generator second stage rotor is permanent magnet", "false" ] } ] }, { "ch": "How to release heat for oil which cools the alterator?", "ansGr": [ { "ans": [ "By other cooler", "true" ] }, { "ans": [ "By natural cool", "false" ] }, { "ans": [ "By water cooler", "false" ] } ] }, { "ch": "Which one keep fix frequency in IDG (Integrated Drive Generator)?", "ansGr": [ { "ans": [ "CSD (Constant Speed Drive)", "true" ] }, { "ans": [ "Generator by itself", "false" ] }, { "ans": [ "Frequency Inverter", "false" ] } ] }, { "ch": "How CSD (Constant Speed Drive) keeps fixed speed to generator rotor?", "ansGr": [ { "ans": [ "Hydraulic pump & hydraulic drive turn alternator which speed is keep fixed around specific rpm", "true" ] }, { "ans": [ "CSD communicates with frequency inverter to keep fixed rpm", "false" ] }, { "ans": [ "It has same size gears inside for keep constant speed at output", "false" ] } ] }, { "ch": "How is about magnetic filed strength if output generator increases?", "ansGr": [ { "ans": [ "More magnetic filed", "true" ] }, { "ans": [ "Less magnetic field", "false" ] }, { "ans": [ "Keep magnetic field be constant", "false" ] } ] }, { "ch": "How is about magnetic filed strength if output generator decreases?", "ansGr": [ { "ans": [ "Less magnetic field", "true" ] }, { "ans": [ "More magnetic filed", "false" ] }, { "ans": [ "Keep magnetic field be constant", "false" ] } ] }, { "ch": "How does differential protection in GCU (Generator Control Unit) work?", "ansGr": [ { "ans": [ "It controls to cut off load bus if sensed voltage is not within specific tolerance", "true" ] }, { "ans": [ "It controls to cut off load bus if sensed voltage is within specific tolerance", "false" ] }, { "ans": [ "It controls to cut off load bus if sensed voltage is very low", "false" ] } ] }, { "ch": "What is reverse current protection of GCU?", "ansGr": [ { "ans": [ "Protection electrical system from collapse if current is flown back to a defective generator", "true" ] }, { "ans": [ "Protection generator from over-excitation", "false" ] }, { "ans": [ "Protection generator from supply more current to loads", "false" ] } ] }, { "ch": "Which field winding in starter-generator is for engine start?", "ansGr": [ { "ans": [ "Series field", "true" ] }, { "ans": [ "Shunt filed", "false" ] }, { "ans": [ "Parallel field", "false" ] } ] }, { "ch": "Which field winding in starter-generator is for generator control?", "ansGr": [ { "ans": [ "Shunt filed", "true" ] }, { "ans": [ "Series field", "false" ] }, { "ans": [ "Both series & parallel fileds", "false" ] } ] }, { "ch": "What is inside 3-unit regulator?", "ansGr": [ { "ans": [ "Relays", "true" ] }, { "ans": [ "Circuit breaker", "false" ] }, { "ans": [ "Contactor", "false" ] } ] }, { "ch": "What is the relation between carbon disk & generator output?", "ansGr": [ { "ans": [ "More resistance carbon disks, less generator output", "true" ] }, { "ans": [ "More resistance carbon disks, more generator output", "false" ] }, { "ans": [ "Less resistance carbon disks, less generator output", "false" ] } ] }, { "ch": "How does DC alterator generate DC?", "ansGr": [ { "ans": [ "By rotated rectifier assembly inside alterator", "true" ] }, { "ans": [ "By transformer", "false" ] }, { "ans": [ "By static rectifier assembly", "false" ] } ] }, { "ch": "How to connect DC power from its alterator to load?", "ansGr": [ { "ans": [ "By slip rings", "true" ] }, { "ans": [ "By breaker", "false" ] }, { "ans": [ "Directly connect", "false" ] } ] }, { "ch": "What is the differerence between diode Zener & common diode?", "ansGr": [ { "ans": [ "Zener stops current at predetermined voltage", "true" ] }, { "ans": [ "They have same functions", "false" ] }, { "ans": [ "Diode stops current at predetermined voltage", "false" ] } ] }, { "ch": "What is difference between solid state type & vibrating type regulators in DC alterator?", "ansGr": [ { "ans": [ "Solid state type regulator has no moving part", "true" ] }, { "ans": [ "Solid state type regulator has moving part", "false" ] }, { "ans": [ "Vibrating type regulator has no moving part", "false" ] } ] }, { "ch": "What concept is for keep electrical system reliable in the aircraft?", "ansGr": [ { "ans": [ "Redundancy sources & essential loads are supplied from many sources", "true" ] }, { "ans": [ "Redundancy sources & crossload sources", "false" ] }, { "ans": [ "Redundancy sources", "false" ] } ] }, { "ch": "How many voltage regulators are there in aircraft?", "ansGr": [ { "ans": [ "GCU, carbon pile & 3-unit regulators", "true" ] }, { "ans": [ "GCU, carbon pile & starter-generator regulators", "false" ] }, { "ans": [ "Carbon pile & 3-unit regulators", "false" ] } ] }, { "ch": "How charge primary cell battery?", "ansGr": [ { "ans": [ "Primary cell is non-rechargable", "true" ] }, { "ans": [ "Use DC source to charge it", "false" ] }, { "ans": [ "Check electrolyte before chrage", "false" ] } ] }, { "ch": "What type of cell is for carbon-Zinc cell ?", "ansGr": [ { "ans": [ "Primary cell", "true" ] }, { "ans": [ "Secondary cell", "false" ] }, { "ans": [ "Third cell", "false" ] } ] }, { "ch": "How is about gas leak in the secondry cell battery when aircraft is too much roll?", "ansGr": [ { "ans": [ "Almost none of leak", "true" ] }, { "ans": [ "Minor leak", "false" ] }, { "ans": [ "Heavy leak", "false" ] } ] }, { "ch": "What type of power source is typically applied in small aircraft?", "ansGr": [ { "ans": [ "DC generator", "true" ] }, { "ans": [ "AC generator", "false" ] }, { "ans": [ "Batteries", "false" ] } ] }, { "ch": "What is the voltage regulation function in the GCU (Generator Control Unit)?", "ansGr": [ { "ans": [ "Take a sample of a generator output and compare that sample to a known reference", "true" ] }, { "ans": [ "Refer to a specific value then protection", "false" ] }, { "ans": [ "Use compensation capacitor", "false" ] } ] }, { "ch": "How to control generator in high output generators?", "ansGr": [ { "ans": [ "Use combination starter-generator into a house", "true" ] }, { "ans": [ "Use more starters", "false" ] }, { "ans": [ "Use double prallel fileds", "false" ] } ] }, { "ch": "How does 3-unit regulator work when high output of generator?", "ansGr": [ { "ans": [ "Resistor inside unit limits the filed current which lower the generator output", "true" ] }, { "ans": [ "Resistor inside unit gains the filed current which raise the generator output", "false" ] }, { "ans": [ "Regulator keeps output is fixed and no changed", "false" ] } ] }, { "ch": "What is three relays in 3-unit regulator?", "ansGr": [ { "ans": [ "Voltage regulation, Current limiter & reverse current relays", "true" ] }, { "ans": [ "Voltage regulation, Current limiter & Parallel coil relays", "false" ] }, { "ans": [ "Voltage regulation, series & reverse current relays", "false" ] } ] }, { "ch": "What is the role of zener diode in ACU (Alternator Control Unit) circuitry?", "ansGr": [ { "ans": [ "Control transistor to flow current to alternator field", "true" ] }, { "ans": [ "Limit the voltage at predetermined value", "false" ] }, { "ans": [ "Isolate current to transistor base for protection", "false" ] } ] }, { "ch": "What is the role of current limiter in dual feed bus system of small aircraft?", "ansGr": [ { "ans": [ "Backup for circuit breaker in line", "true" ] }, { "ans": [ "Protection when overloaded", "false" ] }, { "ans": [ "Limit current to loads", "false" ] } ] }, { "ch": "What is the result if a bus for windshield in dual-feed bus system of small aircrarft is failed in flight?", "ansGr": [ { "ans": [ "The remain windshield is still functional", "true" ] }, { "ans": [ "Both windshields are not functioned", "false" ] }, { "ans": [ "Another bus supplies to both windshields", "false" ] } ] }, { "ch": "What is the condition of relay in 3-unit regulator voltage regulation section in normal flight?", "ansGr": [ { "ans": [ "Close & open at regular intervals", "true" ] }, { "ans": [ "Close", "false" ] }, { "ans": [ "Open", "false" ] } ] }, { "ch": "What is the condition of relay in 3-unit regulator current limiter section in normal flight?", "ansGr": [ { "ans": [ "Close", "true" ] }, { "ans": [ "Open", "false" ] }, { "ans": [ "Close & open at regular intervals", "false" ] } ] }, { "ch": "How to control generator output is higher by carbon-pile regulato typer?", "ansGr": [ { "ans": [ "Disks resistance decreases, the field current increases and generator output goes up", "true" ] }, { "ans": [ "Disks resistance increases, the field current increases and generator output goes up", "false" ] }, { "ans": [ "Keep disks resistance is constant, the field current increases and generator output goes up", "false" ] } ] }, { "ch": "What is big disadvantage of carbon-pile type regulator?", "ansGr": [ { "ans": [ "Carbon pile is worn which affects to regulated voltage accurate", "true" ] }, { "ans": [ "Voltage is regulated un-accurated by design", "false" ] }, { "ans": [ "Voltage coil always decreases filed strength which affect to voltage regulation", "false" ] } ] }, { "ch": "What kind of voltage at output amarture winding in DC alternator?", "ansGr": [ { "ans": [ "AC", "true" ] }, { "ans": [ "Direct DC", "false" ] }, { "ans": [ "Rectified DC", "false" ] } ] }, { "ch": "Why is DC alternator more efficient than DC gennerator?", "ansGr": [ { "ans": [ "DC alternator applies rectifiers which no need brushes and commutator", "true" ] }, { "ans": [ "DC alternator applies new GCU (Generator Control Unit)", "false" ] }, { "ans": [ "DC alternator applies thre pair of brushes which make DC output is less ripple", "false" ] } ] }, { "ch": "What is the result when a gennerator is failed in parallel-bus system?", "ansGr": [ { "ans": [ "Failed generator is isolated from the system", "true" ] }, { "ans": [ "Failed generator is reset then saved by the system", "false" ] }, { "ans": [ "Its failed generator is lost consequently", "false" ] } ] }, { "ch": "What is the SSB (Split System Breaker) sittuation in split-parallel bus system when normal configuration?", "ansGr": [ { "ans": [ "Close", "true" ] }, { "ans": [ "Open", "false" ] }, { "ans": [ "It keeps close when generators are not in phases", "false" ] } ] }, { "ch": "What is the BTB (Bus Tie Breaker) sittuation in split-parallel bus system when a generator is lost?", "ansGr": [ { "ans": [ "Close", "true" ] }, { "ans": [ "Open", "false" ] }, { "ans": [ "Close on user demand", "false" ] } ] }, { "ch": "What is permanent magnet rotary inverter?", "ansGr": [ { "ans": [ "A DC motor drives permanent magnet to spin which induces AC at AC coil", "true" ] }, { "ans": [ "Engine drives permanent magnet to spin which induces AC at AC coil", "false" ] }, { "ans": [ "A AC motor drives permanent magnet to spin which induces AC at AC coil", "false" ] } ] }, { "ch": "What is inductor type rotary inverter?", "ansGr": [ { "ans": [ "Soft iron rotor spins which induces AC from DC filed winding supply", "true" ] }, { "ans": [ "Permanent magnet rotor spins which induces AC from DC filed winding supply", "false" ] }, { "ans": [ "A DC motor drives permanent magnet to spin which induces AC at AC coil", "false" ] } ] }, { "ch": "Why static inverter is more advantage than rotaty inverters?", "ansGr": [ { "ans": [ "Less maintenance & quiet operation", "true" ] }, { "ans": [ "Low cost & less maintenance", "false" ] }, { "ans": [ "High effeciency & low cost", "false" ] } ] }, { "ch": "How many turns are there in secondary coil if transformer ratio turns is 0.5", "ansGr": [ { "ans": [ "It's double rather than primary coil", "true" ] }, { "ans": [ "It's a half less than primary coil", "false" ] }, { "ans": [ "It's 5 times rather than primary coil", "false" ] } ] }, { "ch": "What is coefficient coupling of transformer?", "ansGr": [ { "ans": [ "It's efficiency of the transformer", "true" ] }, { "ans": [ "It's losses of the transformer", "false" ] }, { "ans": [ "It's leakage flux of the transformer", "false" ] } ] }, { "ch": "What is SCR?", "ansGr": [ { "ans": [ "4-layers diode with 3 junctions and 1 gate", "true" ] }, { "ans": [ "2-layers diode with 1 junction and 1 gate", "false" ] }, { "ans": [ "3-layers diode with 2 junctions", "false" ] } ] }, { "ch": "What is called voltage which makes SCR to conduct the current?", "ansGr": [ { "ans": [ "Breakover voltage", "true" ] }, { "ans": [ "Breakdown voltage", "false" ] }, { "ans": [ "Breakout voltage", "false" ] } ] }, { "ch": "Assume C/B is rated 10A and wire gage is 18 respectively. Which wire size is chosen if C/B rate is 5A?", "ansGr": [ { "ans": [ "more than 18", "true" ] }, { "ans": [ "less then 18", "false" ] }, { "ans": [ "18", "false" ] } ] }, { "ch": "What is the standby power bus?", "ansGr": [ { "ans": [ "Bus is used for emergency power when the main sources of power fail", "true" ] }, { "ans": [ "This is hot battery bus", "false" ] }, { "ans": [ "Bus is used when all power sources of power fail", "false" ] } ] }, { "part": "M11.7 ATA 25", "ch": "What type of equipment is required on board aircraft for the protection of passengers and crew?", "ansGr": [ { "ans": [ "Emergency equipment such as fire extinguishers and life rafts.", "true" ] }, { "ans": [ "Entertainment systems and luxury seating.", "false" ] }, { "ans": [ "Extra fuel tanks and cargo space.", "false" ] } ] }, { "ch": "What do the EASA-issued certification specifications (CS) define?", "ansGr": [ { "ans": [ "The emergency equipment requirements for different types of aircraft.", "true" ] }, { "ans": [ "The maintenance schedules for aircraft.", "false" ] }, { "ans": [ "The seating arrangements in commercial airliners.", "false" ] } ] }, { "ch": "According to CS-25 specifications, how many portable fire extinguishers are required on a 250-seat aircraft?", "ansGr": [ { "ans": [ "Four portable fire extinguishers.", "true" ] }, { "ans": [ "Two portable fire extinguishers.", "false" ] }, { "ans": [ "Six portable fire extinguishers.", "false" ] } ] }, { "ch": "Who is responsible for ensuring emergency equipment is present and airworthy before each flight?", "ansGr": [ { "ans": [ "The aircraft operator", "true" ] }, { "ans": [ "The aircraft manufacturer", "false" ] }, { "ans": [ "The flight crew", "false" ] } ] }, { "ch": "What type of documentation may be referenced for emergency equipment details?", "ansGr": [ { "ans": [ "ETSO", "true" ] }, { "ans": [ "ICAO Annex 14", "false" ] }, { "ans": [ "FAA AC 43.13", "false" ] } ] }, { "ch": "What must be done to emergency equipment before flight?", "ansGr": [ { "ans": [ "Ensure it is present and airworthy", "true" ] }, { "ans": [ "Ensure it is color-coded", "false" ] }, { "ans": [ "Ensure it is stored in the cockpit", "false" ] } ] }, { "ch": "What document details installation and removal procedures for emergency equipment?", "ansGr": [ { "ans": [ "Aircraft maintenance manual", "true" ] }, { "ans": [ "Flight operations manual", "false" ] }, { "ans": [ "Safety management system", "false" ] } ] }, { "ch": "What is the technician’s role regarding emergency equipment?", "ansGr": [ { "ans": [ "Ensure equipment is in place and serviceable", "true" ] }, { "ans": [ "Operate the equipment during flight", "false" ] }, { "ans": [ "Train passengers on usage", "false" ] } ] }, { "ch": "What type of aircraft requires fewer fire extinguishers?", "ansGr": [ { "ans": [ "Small single-engine aircraft", "true" ] }, { "ans": [ "Large commercial aircraft", "false" ] }, { "ans": [ "Cargo aircraft", "false" ] } ] }, { "ch": "What is the role of AMC in emergency equipment compliance?", "ansGr": [ { "ans": [ "Provides acceptable means for compliance with CS-25", "true" ] }, { "ans": [ "Lists emergency equipment brands", "false" ] }, { "ans": [ "Specifies cabin layout", "false" ] } ] }, { "ch": "What is CS-23 used for?", "ansGr": [ { "ans": [ "Certification standards for small aircraft", "true" ] }, { "ans": [ "Emergency evacuation procedures", "false" ] }, { "ans": [ "Fire extinguisher maintenance", "false" ] } ] }, { "ch": "What document provides additional guidance on compliance with CS-25?", "ansGr": [ { "ans": [ "Acceptable Means for Compliance (AMC)", "true" ] }, { "ans": [ "Maintenance Planning Document (MPD)", "false" ] }, { "ans": [ "Minimum Equipment List (MEL)", "false" ] } ] }, { "ch": "Which regulation specifies emergency equipment requirements for large commercial aircraft?", "ansGr": [ { "ans": [ "CS-25", "true" ] }, { "ans": [ "CS-23", "false" ] }, { "ans": [ "CS-27", "false" ] } ] }, { "ch": "How are aircraft seats typically mounted in the cabin?", "ansGr": [ { "ans": [ "In groups of two or three seats on a frame.", "true" ] }, { "ans": [ "Individually on the cabin floor.", "false" ] }, { "ans": [ "Only on the walls of the aircraft.", "false" ] } ] }, { "ch": "What type of restraints are required for all passengers on passenger service aircraft?", "ansGr": [ { "ans": [ "Seat belts.", "true" ] }, { "ans": [ "Safety harnesses.", "false" ] }, { "ans": [ "Shoulder pads.", "false" ] } ] }, { "ch": "What must operators ensure when configuring seats, galleys, bulkheads, and lavatories?", "ansGr": [ { "ans": [ "They must meet CS-25 specifications.", "true" ] }, { "ans": [ "They can arrange them in any manner without restrictions.", "false" ] }, { "ans": [ "They must use only the manufacturer's suggested layouts.", "false" ] } ] }, { "ch": "What is a common feature of cabin entertainment in airlines?", "ansGr": [ { "ans": [ "Individual selection of music and movies at each seat location.", "true" ] }, { "ans": [ "Only pre-selected movies shown on a single screen.", "false" ] }, { "ans": [ "No entertainment options provided.", "false" ] } ] }, { "ch": "What are onboard stairs that can be deployed for passenger use called?", "ansGr": [ { "ans": [ "Airstairs.", "true" ] }, { "ans": [ "Jetway stairs.", "false" ] }, { "ans": [ "Portable stairs.", "false" ] } ] }, { "ch": "What feature allows aircraft seats to be adjusted in the cabin?", "ansGr": [ { "ans": [ "Seat tracks that enable movement forward and aft in 1 inch increments.", "true" ] }, { "ans": [ "Hydraulic systems that automatically reposition the seats.", "false" ] }, { "ans": [ "Manual levers that require tools for adjustment.", "false" ] } ] }, { "ch": "What is the purpose of the formed metal luggage restraint rail in the seat assembly?", "ansGr": [ { "ans": [ "To prevent luggage from sliding forward during abrupt deceleration.", "true" ] }, { "ans": [ "To provide additional seating support.", "false" ] }, { "ans": [ "To secure the seat in place during flight.", "false" ] } ] }, { "ch": "What must be done if a seat belt is not functional before a flight?", "ansGr": [ { "ans": [ "The seat must be placarded and not used.", "true" ] }, { "ans": [ "The seat can still be used with a warning.", "false" ] }, { "ans": [ "The seat belt can be repaired mid-flight.", "false" ] } ] }, { "ch": "What type of straps do the captain and first officer typically use in their seat belts?", "ansGr": [ { "ans": [ "Shoulder harness and crotch strap along with the lap belts.", "true" ] }, { "ans": [ "Lap belts only.", "false" ] }, { "ans": [ "No additional straps beyond the lap belt.", "false" ] } ] }, { "ch": "What must be done if a seat belt is not functional before a flight?", "ansGr": [ { "ans": [ "The seat must be placarded and not used.", "true" ] }, { "ans": [ "The seat can still be used with a warning.", "false" ] }, { "ans": [ "The seat belt can be repaired mid-flight.", "false" ] } ] }, { "ch": "What type of straps do the captain and first officer typically use in their seat belts?", "ansGr": [ { "ans": [ "Shoulder harness and crotch strap along with the lap belts.", "true" ] }, { "ans": [ "Lap belts only.", "false" ] }, { "ans": [ "No additional straps beyond the lap belt.", "false" ] } ] }, { "ch": "What technology is increasingly used for cabin entertainment equipment?", "ansGr": [ { "ans": [ "Digital data busing.", "true" ] }, { "ans": [ "Analog signal transmission.", "false" ] }, { "ans": [ "Satellite communication only.", "false" ] } ] }, { "ch": "Where are individual seat electronics units (SEUs) typically mounted?", "ansGr": [ { "ans": [ "Under the seats in each seat row.", "true" ] }, { "ans": [ "Above the passenger compartments.", "false" ] }, { "ans": [ "In the galley area of the aircraft.", "false" ] } ] }, { "ch": "How are airstairs typically deployed on an aircraft?", "ansGr": [ { "ans": [ "They are electrically deployed from under the main cabin floor.", "true" ] }, { "ans": [ "They are manually unfolded from a compartment in the cabin.", "false" ] }, { "ans": [ "They are dropped down from the overhead bins.", "false" ] } ] }, { "ch": "Why are airstairs rarely used on large wide-body aircraft?", "ansGr": [ { "ans": [ "The height of the main passenger cabin makes them too cumbersome.", "true" ] }, { "ans": [ "They are not designed for wide-body aircraft.", "false" ] }, { "ans": [ "They require too much maintenance.", "false" ] } ] }, { "ch": "What determines the exact location of passenger service unit (PSU) installations?", "ansGr": [ { "ans": [ "They can be modified to position them correctly in relation to the configuration of seats.", "true" ] }, { "ans": [ "They are fixed and cannot be adjusted.", "false" ] }, { "ans": [ "They are based solely on manufacturer specifications.", "false" ] } ] }, { "ch": "Where are crew berths typically located according to design and access requirements?", "ansGr": [ { "ans": [ "At the forward or aft ends of the cabin or above the main flight and passenger cabins.", "true" ] }, { "ans": [ "Next to the emergency exits.", "false" ] }, { "ans": [ "In the cargo hold of the aircraft.", "false" ] } ] }, { "ch": "What does CS-25 specify regarding the location of emergency equipment on the flight deck?", "ansGr": [ { "ans": [ "It must be within arm’s reach of the pilot while sitting.", "true" ] }, { "ans": [ "It can be placed anywhere on the flight deck.", "false" ] }, { "ans": [ "It should be accessible only when the aircraft is on the ground.", "false" ] } ] }, { "ch": "Why do manufacturers produce aircraft with consistent equipment locations?", "ansGr": [ { "ans": [ "To take into account location specifications and the practicality of other equipment.", "true" ] }, { "ans": [ "To comply with pilot preferences.", "false" ] }, { "ans": [ "To reduce manufacturing costs.", "false" ] } ] }, { "ch": "What type of units are galleys typically constructed as?", "ansGr": [ { "ans": [ "Pre-constructed modular units.", "true" ] }, { "ans": [ "Custom-built units for each aircraft.", "false" ] }, { "ans": [ "Temporary installations that can be removed.", "false" ] } ] }, { "ch": "Where are most galleys installed in relation to the passenger cabin?", "ansGr": [ { "ans": [ "At the aft or forward end of the passenger cabin.", "true" ] }, { "ans": [ "In the middle of the cabin for easy access.", "false" ] }, { "ans": [ "Above the main flight deck.", "false" ] } ] }, { "part": "M11.8 ATA 26", "ch": "What are the three necessary components for a fire?", "ansGr": [ { "ans": [ "Fuel, heat, oxygen", "true" ] }, { "ans": [ "Oxygen, hydrogen, fire", "false" ] }, { "ans": [ "Water, heat, wood", "false" ] } ] }, { "ch": "What defines a fire zone in an aircraft?", "ansGr": [ { "ans": [ "An area needing fire detection/extinguishing equipment", "true" ] }, { "ans": [ "An area with high humidity", "false" ] }, { "ans": [ "A compartment for crew rest", "false" ] } ] }, { "ch": "Why must oxygen system equipment be kept free from traces of oil or grease?", "ansGr": [ { "ans": [ "They spontaneously ignite with oxygen under pressure", "true" ] }, { "ans": [ "They corrode the oxygen system components", "false" ] }, { "ans": [ "They increase the weight of the equipment", "false" ] } ] }, { "ch": "What principle does the thermocouple fire warning system operate on?", "ansGr": [ { "ans": [ "Rate of temperature rise", "true" ] }, { "ans": [ "Constant temperature", "false" ] }, { "ans": [ "Pressure changes", "false" ] } ] }, { "ch": "What shape are the fixed containers typically used for storing fire extinguishing agents ?", "ansGr": [ { "ans": [ "Spherical", "true" ] }, { "ans": [ "Cylindrical", "false" ] }, { "ans": [ "Cubical", "false" ] } ] }, { "ch": "Where is the smoke detector in the lavatory typically located?", "ansGr": [ { "ans": [ "In the ceiling of the lavatory", "true" ] }, { "ans": [ "On the wall next to the sink", "false" ] }, { "ans": [ "On the floor", "false" ] } ] }, { "ch": "What type of materials are involved in Class A fires?", "ansGr": [ { "ans": [ "Ordinary combustible materials like wood, cloth, and paper", "true" ] }, { "ans": [ "Flammable liquids, petroleum oils, greases", "false" ] }, { "ans": [ "Combustible metals, such as magnesium, titanium", "false" ] } ] }, { "ch": "Where is the manufacturer's date stamp usually placed on the discharge cartridge?", "ansGr": [ { "ans": [ "On the face of the cartridge", "true" ] }, { "ans": [ "Inside the cartridge", "false" ] }, { "ans": [ "On the bottom", "false" ] } ] }, { "ch": "Which type of materials can cause class D fires?", "ansGr": [ { "ans": [ "Combustible metals like magnesium and titanium", "true" ] }, { "ans": [ "Ordinary combustibles like wood,cloth, paper, rubber, and plastics", "false" ] }, { "ans": [ "Flammable liquids, petroleum oils, greases, tars, oil-based paints", "false" ] } ] }, { "ch": "Which type of materials can cause class B fires?", "ansGr": [ { "ans": [ "Flammable liquids, petroleum oils, greases, tars, oil-based paints", "true" ] }, { "ans": [ "Combustible metals like magnesium and titanium", "false" ] }, { "ans": [ "Energized electrical equipment", "false" ] } ] }, { "ch": "What principles are the design of pneumatic single point detectors based on?", "ansGr": [ { "ans": [ "Gas laws", "true" ] }, { "ans": [ "Electrical principles", "false" ] }, { "ans": [ "Hydraulic principles", "false" ] } ] }, { "ch": "What does the sensing element of the pneumatic single point detector consist of?", "ansGr": [ { "ans": [ "A helium-filled tube", "true" ] }, { "ans": [ "An air-filled tube", "false" ] }, { "ans": [ "A nitrogen-filled tube", "false" ] } ] }, { "ch": "What is the closed helium-filled tube connected to at one end?", "ansGr": [ { "ans": [ "A responder assembly", "true" ] }, { "ans": [ "A pressure gauge", "false" ] }, { "ans": [ "A thermometer", "false" ] } ] }, { "ch": "What component is central to the light refraction type of smoke detector?", "ansGr": [ { "ans": [ "Photoelectric cell", "true" ] }, { "ans": [ "Temperature sensor", "false" ] }, { "ans": [ "Acoustic sensor", "false" ] } ] }, { "ch": "How do smoke particles interact with the light in a light refraction type smoke detector?", "ansGr": [ { "ans": [ "They refract the light to the photoelectric cell", "true" ] }, { "ans": [ "They absorb the light", "false" ] }, { "ans": [ "They block the light entirely", "false" ] } ] }, { "ch": "What happens when the photoelectric cell detects enough refracted light?", "ansGr": [ { "ans": [ "It creates an electrical current that sets off a light", "true" ] }, { "ans": [ "It turns off the smoke detector", "false" ] }, { "ans": [ "It decreases the sensitivity of the detector", "false" ] } ] }, { "ch": "A Systron-Donner fire detection system uses.", "ansGr": [ { "ans": [ "Helium gas.", "true" ] }, { "ans": [ "Nitrogen gas.", "false" ] }, { "ans": [ "Oxygen gas.", "false" ] } ] }, { "ch": "How does the ionization type smoke detector generate an alarm signal?", "ansGr": [ { "ans": [ "By detecting a change in ion density due to smoke", "true" ] }, { "ans": [ "By measuring the temperature increase", "false" ] }, { "ans": [ "By monitoring carbon monoxide levels", "false" ] } ] }, { "ch": "What are the two types of optical sensors used as flame detectors?", "ansGr": [ { "ans": [ "Infrared (IR) and ultraviolet", "true" ] }, { "ans": [ "Thermal and ultraviolet", "false" ] }, { "ans": [ "Magnetic and electric", "false" ] } ] }, { "ch": "What does the digital circuit control in the flame detector?", "ansGr": [ { "ans": [ "The alarm sensitivity level", "true" ] }, { "ans": [ "The power supply for detector", "false" ] }, { "ans": [ "The temperature in detector", "false" ] } ] }, { "ch": "When does the solder sealing the nozzles of the fire extinguisher bottle melt?", "ansGr": [ { "ans": [ "When temperature reached 75°C", "true" ] }, { "ans": [ "When temperature reached 100°C", "false" ] }, { "ans": [ "When temperature reached 150°C", "false" ] } ] }, { "ch": "The thermistor properties of the sensing element will ?", "ansGr": [ { "ans": [ "Remain unchanged for the life of the element", "true" ] }, { "ans": [ "Be changed after priod of time", "false" ] }, { "ans": [ "Be changed after each time of an overheat event", "false" ] } ] }, { "ch": "What happens at a carbon monoxide concentration of 100 parts per million in chemical color chang e detectors?", "ansGr": [ { "ans": [ "The color changes in 2 to 5 minutes", "true" ] }, { "ans": [ "The color changes in 15 to 30 minutes", "false" ] }, { "ans": [ "The color changes immediately", "false" ] } ] }, { "ch": "What is the relationship between the concentration of carbon monoxide and the transition time inc hemical color change detectors?", "ansGr": [ { "ans": [ "Inversely related", "true" ] }, { "ans": [ "Directly proportional", "false" ] }, { "ans": [ "Randomly related", "false" ] } ] }, { "ch": "What is the main function of carbon dioxide as an extinguishing agent?", "ansGr": [ { "ans": [ "It smothers a fire and deprives it of oxygen", "true" ] }, { "ans": [ "It smothers a fire and It absorbs oxygen", "false" ] }, { "ans": [ "It increases temperature", "false" ] } ] }, { "ch": "Which fire extinguishing agent is non-combustible and does not react with most substances?", "ansGr": [ { "ans": [ "Carbon dioxide (CO₂)", "true" ] }, { "ans": [ "Dry powder", "false" ] }, { "ans": [ "Water", "false" ] } ] }, { "ch": "Which type of fires is CO₂ not effective on?", "ansGr": [ { "ans": [ "Fires involving chemicals containing their own oxygen supply", "true" ] }, { "ans": [ "Fires involving electrical equipment", "false" ] }, { "ans": [ "Fires involving metals", "false" ] } ] }, { "ch": "What classes of fires are dry powder extinguishers best for use on?", "ansGr": [ { "ans": [ "Class B, C, and D", "true" ] }, { "ans": [ "Class A and B", "false" ] }, { "ans": [ "Class B and C", "false" ] } ] }, { "ch": "What are examples of dry powder chemicals?", "ansGr": [ { "ans": [ "Sodium bicarbonate, potassium bicarbonate", "true" ] }, { "ans": [ "Sodium chloride and potassium chloride", "false" ] }, { "ans": [ "Sodium hydroxide and potassium hydroxide", "false" ] } ] }, { "ch": "What type of detection system is typically combined with a fixed Halon extinguishing system in carg o compartments?", "ansGr": [ { "ans": [ "Smoke type detection", "true" ] }, { "ans": [ "Heat type detection", "false" ] }, { "ans": [ "Light type detection", "false" ] } ] }, { "ch": "Why might the master warning lights and fire warning aural be prevented from operating during tak eoff?", "ansGr": [ { "ans": [ "To avoid distracting the pilot", "true" ] }, { "ans": [ "To reduce noise levels", "false" ] }, { "ans": [ "To prevent false alarms", "false" ] } ] }, { "ch": "What should the flight crew do if the cargo fire warning light comes on during flight?", "ansGr": [ { "ans": [ "Perform the appropriate fire suppression procedures", "true" ] }, { "ans": [ "Land at the nearest airport immediately", "false" ] }, { "ans": [ "Continue normal operations", "false" ] } ] }, { "ch": "What occurs when smoke particles are present in the smoke detection chamber?", "ansGr": [ { "ans": [ "The smoke particles reflect more light onto the scatter detector", "true" ] }, { "ans": [ "The smoke particles reduce airflow", "false" ] }, { "ans": [ "The smoke particles absorb all light", "false" ] } ] }, { "ch": "When the fire handle is operated it", "ansGr": [ { "ans": [ "Cuts off field current, hydraulics and fuel and operates fire extinguishers", "true" ] }, { "ans": [ "Cuts off fuel. Generator remains on line to provide electrical power", "false" ] }, { "ans": [ "Operates fire extinguisher only", "false" ] } ] }, { "ch": "What happens if there is a defective diode or contamination in the smoke detector?", "ansGr": [ { "ans": [ "The detector changes to another set of diodes and sends a fault message", "true" ] }, { "ans": [ "The detector increases sensitivity", "false" ] }, { "ans": [ "The detector stops monitoring", "false" ] } ] }, { "ch": "What is the function of the water separator in the smoke detection system?", "ansGr": [ { "ans": [ "To remove moisture from the air", "true" ] }, { "ans": [ "To increase humidity", "false" ] }, { "ans": [ "To cool the air", "false" ] } ] }, { "ch": "How does the smoke detector respond if it detects contamination?", "ansGr": [ { "ans": [ "It switches to the other set of diodes", "true" ] }, { "ans": [ "It increases the intensity of the LED", "false" ] }, { "ans": [ "It shuts down the system", "false" ] } ] }, { "ch": "Why are fire extinguisher containers checked periodically?", "ansGr": [ { "ans": [ "To verify the pressure is within limits", "true" ] }, { "ans": [ "To check the weight", "false" ] }, { "ans": [ "To measure the temperature", "false" ] } ] }, { "ch": "What are the funtions of pneumatic detectors ?", "ansGr": [ { "ans": [ "Averaging function and discrete function", "true" ] }, { "ans": [ "Averaging function and smoke detection function", "false" ] }, { "ans": [ "Discrete function and fire detection function", "false" ] } ] }, { "ch": "How often should fire extinguisher containers be checked?", "ansGr": [ { "ans": [ "Periodically, as specified by maintenance guidelines", "true" ] }, { "ans": [ "Every five years", "false" ] }, { "ans": [ "Annually", "false" ] } ] }, { "ch": "What powers the lavatory smoke detector in an aircraft?", "ansGr": [ { "ans": [ "28-volt DC left/right main DC bus", "true" ] }, { "ans": [ "12-volt DC battery", "false" ] }, { "ans": [ "28-volt AC power", "false" ] } ] }, { "ch": "What does the timing circuit create in the lavatory smoke detector system?", "ansGr": [ { "ans": [ "Intermittent ground", "true" ] }, { "ans": [ "Continuous ground", "false" ] }, { "ans": [ "Increased voltage", "false" ] } ] }, { "ch": "What role does the smoke detection circuit play in the lavatory smoke detector system?", "ansGr": [ { "ans": [ "It makes a ground for the relay", "true" ] }, { "ans": [ "It increases the voltage", "false" ] }, { "ans": [ "It deactivates the alarm", "false" ] } ] }, { "ch": "Why are fire detector sensing elements at risk during maintenance?", "ansGr": [ { "ans": [ "Their location and small size increase the chance of damage", "true" ] }, { "ans": [ "They are made of fragile materials", "false" ] }, { "ans": [ "Their large size makes them prone to damage", "false" ] } ] }, { "ch": "What is a common cause of intermittent alarms in engine fire detection systems?", "ansGr": [ { "ans": [ "Loose wire occasionally touching a nearby terminal", "true" ] }, { "ans": [ "Overheating of the engine", "false" ] }, { "ans": [ "High-altitude operations", "false" ] } ] }, { "ch": "What class of fires is water used for as a fire extinguishing agent?", "ansGr": [ { "ans": [ "Class A", "true" ] }, { "ans": [ "Class B", "false" ] }, { "ans": [ "Class C", "false" ] } ] }, { "ch": "What type of gas be released when pneumatic detector heated ?", "ansGr": [ { "ans": [ "Hydrogen gas", "true" ] }, { "ans": [ "Nitrogen gas.", "false" ] }, { "ans": [ "Helium gas", "false" ] } ] }, { "ch": "How many passengers can be transported with only 1 portable fire extinguisher available?", "ansGr": [ { "ans": [ "Less than 30 passengers", "true" ] }, { "ans": [ "25 through 35", "false" ] }, { "ans": [ "20 through 40", "false" ] } ] }, { "ch": "What is the first step in using a portable fire extinguisher according to the instructions on the contai ner?", "ansGr": [ { "ans": [ "Remove a safetying device", "true" ] }, { "ans": [ "Aim the extinguisher at the fire", "false" ] }, { "ans": [ "Squeeze the trigger handle", "false" ] } ] }, { "ch": "What is the purpose of squeezing the trigger handle on a portable fire extinguisher?", "ansGr": [ { "ans": [ "To release the extinguishing agent", "true" ] }, { "ans": [ "To check the pressure", "false" ] }, { "ans": [ "To turn on the flashlight", "false" ] } ] }, { "ch": "What are the most common types of portable fire extinguishers used in aviation?", "ansGr": [ { "ans": [ "Halon 1211 and water", "true" ] }, { "ans": [ "CO₂ and dry chemical", "false" ] }, { "ans": [ "Foam and powder agents", "false" ] } ] }, { "ch": "What type of fire are Halon extinguishers used for?", "ansGr": [ { "ans": [ "Electrical and flammable liquid fires", "true" ] }, { "ans": [ "Smoke and dust-related fires", "false" ] }, { "ans": [ "Non-electrical and solid material fires", "false" ] } ] }, { "ch": "Why are dry chemical extinguishers unsuitable for cockpit use?", "ansGr": [ { "ans": [ "They may corrode electronics and cause visibility issues", "true" ] }, { "ans": [ "They require high maintenance and heavy training", "false" ] }, { "ans": [ "They are too large and hard to store onboard", "false" ] } ] }, { "ch": "Where are instructions for using portable fire extinguishers usually found?", "ansGr": [ { "ans": [ "Printed on the extinguisher container label", "true" ] }, { "ans": [ "Displayed on a separate safety instruction card", "false" ] }, { "ans": [ "Mentioned only in crew safety training manuals", "false" ] } ] }, { "ch": "What information is typically included on the fire extinguisher label?", "ansGr": [ { "ans": [ "Approval number, weight, and date of last service", "true" ] }, { "ans": [ "Manufacturer name and maximum spray distance", "false" ] }, { "ans": [ "Serial number and extinguisher color code", "false" ] } ] }, { "ch": "Which type of extinguisher is suitable for ground operations but not in the cabin?", "ansGr": [ { "ans": [ "Specialized dry powder", "true" ] }, { "ans": [ "Halon 1211 unit", "false" ] }, { "ans": [ "Water-type extinguisher", "false" ] } ] } ]