C-130h Hercules APU Run Test: Quiz!

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C-130h Hercules APU Run Test: Quiz! - Quiz

The C-130 Hercules is an American four-engine turboprop military transport aircraft. Do you know about military flights? How much do you know the IAW 1C-130H-2 JG-00-1-1 operates? Take up the c-130h Apu run test and see how much you know about it. All the best!


Questions and Answers
  • 1. 

    Hearing protection is required for everyone in the vicinity of the airplane when the APU is running.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The APU (Auxiliary Power Unit) is a small engine located at the rear of an aircraft that provides power for various functions when the main engines are not running. It can be quite noisy when running. Therefore, to protect their hearing, it is necessary for everyone in the vicinity of the airplane to wear hearing protection when the APU is running.

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  • 2. 

    You MAY operate the APU if the APU fuel shutoff valve is not operating properly.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Operating the APU with a malfunctioning APU fuel shutoff valve is not recommended. The APU fuel shutoff valve is responsible for controlling the flow of fuel to the APU. If it is not operating properly, it could result in fuel leakage or other safety hazards. Therefore, it is important to ensure that the APU fuel shutoff valve is functioning correctly before operating the APU.

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  • 3. 

    If the APU fire warning system is not operating properly you may:

    • A.

      Still Run APU

    • B.

      Still run with fireguard

    • C.

      Still run with communications with tower

    • D.

      Not run

    Correct Answer
    D. Not run
    Explanation
    If the APU fire warning system is not operating properly, it is not safe to run the APU. The fire warning system is designed to detect and alert the crew in case of a fire in the APU. Without a functioning fire warning system, there is a risk of not being able to detect a potential fire, which could lead to a dangerous situation. Therefore, the correct course of action would be to not run the APU until the fire warning system is fixed.

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  • 4. 

    If the APU has been operated on recently, APU components and oil in APU may be hot enough to cause burns.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    If the APU (Auxiliary Power Unit) has been used recently, it is likely that its components and the oil inside it are still hot. This means that if someone were to come into contact with these hot components or oil, they could potentially get burned. Therefore, the statement "If the APU has been operated on recently, APU components and oil in APU may be hot enough to cause burns" is true.

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  • 5. 

    How many people are required to run APU?

    • A.

      1

    • B.

      2

    • C.

      3

    • D.

      4

    Correct Answer
    B. 2
    Explanation
    The question asks for the number of people required to run APU. The correct answer is 2, which implies that APU requires two people to operate it efficiently.

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  • 6. 

    What fuel tank does the APU get its fuel from?

    • A.

      1

    • B.

      2

    • C.

      3

    • D.

      4

    Correct Answer
    B. 2
    Explanation
    The APU (Auxiliary Power Unit) gets its fuel from the aircraft's main fuel tanks. These tanks contain the fuel that is used by the engines during flight. The APU is a small turbine engine located at the rear of the aircraft, and it provides power for various functions such as starting the main engines, operating electrical systems, and providing air conditioning when the main engines are not running. Since the APU is an integral part of the aircraft, it relies on the same fuel source as the main engines, which is the main fuel tanks.

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  • 7. 

    The following are required prior to APU start:

    • A.

      NLG ground pin

    • B.

      Airplane statically grounded

    • C.

      Wheels chocked

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    Prior to starting the APU, it is necessary to have the NLG ground pin in place, which ensures the aircraft is properly grounded. Additionally, the airplane must be statically grounded to prevent any electrical discharge. Lastly, the wheels should be chocked to prevent any movement of the aircraft during the APU start. Therefore, all of the given options are required prior to starting the APU.

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  • 8. 

    The minimum fuel level required in the fuel tank prior to APU operation is:

    • A.

      As much as you want.

    • B.

      2000 lbs

    • C.

      1000 lbs

    • D.

      1500 lbs

    Correct Answer
    B. 2000 lbs
    Explanation
    The minimum fuel level required in the fuel tank prior to APU operation is 2000 lbs. This is because the APU (Auxiliary Power Unit) requires a certain amount of fuel to operate effectively. Having a minimum fuel level of 2000 lbs ensures that there is enough fuel to power the APU and perform its functions without any issues.

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  • 9. 

    To check the fuel strainer, you should do what?

    • A.

      Place a container under it, depress drain valve and ensure fuel flows continuously.

    • B.

      Verify fuel flow stops.

    • C.

      Place a container under it, depress drain valve and ensure fuel flow stops.

    • D.

      Don’t check it.

    Correct Answer
    C. Place a container under it, depress drain valve and ensure fuel flow stops.
    Explanation
    To check the fuel strainer, you should place a container under it, depress the drain valve, and ensure that fuel flow stops. This process allows you to collect any fuel that may be draining from the strainer and verify that it is functioning properly. By ensuring that the fuel flow stops, you can confirm that the strainer is effectively filtering out any debris or contaminants from the fuel system.

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  • 10. 

    In equipment conditions of the Job Guide, the UHF and VHF communications systems are turned to:

    • A.

      Off

    • B.

      On.

    • C.

      Standby.

    • D.

      Pri.

    Correct Answer
    A. Off
    Explanation
    The correct answer is "Off" because when the equipment conditions of the Job Guide mention that the UHF and VHF communications systems are turned off, it means that they are not in use or active. This could be because there is no need for communication at that time or there might be a specific reason for keeping them turned off. Turning off the communications systems helps conserve power and prevents any unwanted interference or communication disruptions.

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  • 11. 

    If the battery is to be used for normal shutdown EXT, the DC PWR switch should be in _____ position, and the DC BUS TIE switch should be in ______ position.

    • A.

      Off, Tied

    • B.

      Battery, Untied.

    • C.

      Off, Untied

    • D.

      Battery, Tied

    Correct Answer
    D. Battery, Tied
    Explanation
    For a normal shutdown EXT, the battery needs to be used. Therefore, the DC PWR switch should be in the "Battery" position. Additionally, the DC BUS TIE switch should be in the "Tied" position to ensure that the battery power is distributed across both DC buses.

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  • 12. 

    You are required to monitor the UHF radio set to ground control frequency for emergency communications.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is asking if it is necessary to monitor the UHF radio set to ground control frequency for emergency communications. The correct answer is "True" because monitoring the UHF radio set to ground control frequency is essential in order to receive emergency communications and respond accordingly.

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  • 13. 

    If the battery was used for normal shutdown place DC BUS TIE switch to ____ position after the door closes.

    • A.

      Off

    • B.

      Tied

    • C.

      Untied

    • D.

      On

    Correct Answer
    C. Untied
    Explanation
    When the battery is used for a normal shutdown, the DC BUS TIE switch should be placed in the "Untied" position after the door closes. This means that the switch should be set to disconnect or separate the two DC bus systems. By untieing the DC bus systems, the battery power is isolated and not connected to the other systems, ensuring a safe shutdown process.

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  • 14. 

    If isolated DC power is interrupted while the APU is operating, what will happen?

    • A.

      APU will continue to run.

    • B.

      You will be given 2 minutes to turn on generator.

    • C.

      The control circuit will be opened and cause the APU to stop.

    • D.

      You will be given 4 minutes to turn on generator.

    Correct Answer
    C. The control circuit will be opened and cause the APU to stop.
    Explanation
    If the isolated DC power is interrupted while the APU is operating, the control circuit will be opened, causing the APU to stop. This means that the APU will no longer continue to run.

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  • 15. 

    The start light must go out within how many min(s)?

    • A.

      1

    • B.

      2

    • C.

      3

    • D.

      4

    Correct Answer
    A. 1
    Explanation
    The start light must go out within 1 minute.

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  • 16. 

    The starter duty cycle is:

    • A.

      1 min on, 1 min off, 1 min on, 4 min off

    • B.

      1 min on, 4 min off

    • C.

      1 min on, 5 min off

    • D.

      No duty cycle

    Correct Answer
    B. 1 min on, 4 min off
    Explanation
    The correct answer is 1 min on, 4 min off. This means that the starter is active for 1 minute and then inactive for 4 minutes before being active again. This duty cycle allows for the starter to rest and cool down for a longer period of time compared to the other options, which can help prevent overheating and prolong the lifespan of the starter.

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  • 17. 

    The start light goes out at what percent?

    • A.

      50%

    • B.

      95%

    • C.

      100%.

    • D.

      Stays on

    Correct Answer
    A. 50%
    Explanation
    The start light goes out at 50% because it indicates that the device or system has successfully started or powered on. Once it reaches 50% of the startup process, the light turns off to indicate that the startup is complete and the device is ready for use.

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  • 18. 

    On speed, the light comes on and stays on at what percent rpm?

    • A.

      35%

    • B.

      65%

    • C.

      95%

    • D.

      75%

    Correct Answer
    C. 95%
    Explanation
    The correct answer is 95%. This means that when the speed reaches 95% of the maximum revolutions per minute (rpm), the light comes on and stays on. This suggests that the light is a warning or indicator for when the engine is running at a very high speed, close to its maximum capacity.

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  • 19. 

    On speed, the light comes on within what time frame?

    • A.

      35 sec

    • B.

      60 sec

    • C.

      35 sec after start light comes on.

    • D.

      85 sec after start light comes on..

    Correct Answer
    D. 85 sec after start light comes on..
    Explanation
    The correct answer is "85 sec after start light comes on." This means that the light turns on 85 seconds after the start.

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  • 20. 

    What is normal rpm after starting cycle is complete?

    • A.

      94%-102%

    • B.

      102 +/- 1%

    • C.

      100 +/- 2%

    • D.

      96%-100%

    Correct Answer
    B. 102 +/- 1%
    Explanation
    The correct answer is 102 +/- 1%. This means that the normal rpm after the starting cycle is complete can range from 101 to 103, with 102 being the most accurate value. The "+/- 1%" indicates that the rpm can deviate by 1% from the central value of 102. This range allows for slight variations in the rpm while still maintaining the expected normal level.

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  • 21. 

    After starting cycle is complete, EGT must not exceed.

    • A.

      640 C

    • B.

      620 C

    • C.

      680 C

    • D.

      No Limit.

    Correct Answer
    C. 680 C
    Explanation
    The correct answer is 680 C because EGT (Exhaust Gas Temperature) is a critical parameter in a cycle. If the EGT exceeds a certain limit, it can cause damage to the engine components. Therefore, it is important to ensure that the EGT does not exceed a safe threshold. Out of the given options, 680 C is the highest temperature mentioned, indicating that there is a limit and the EGT must not exceed this value.

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  • 22. 

    The APU tachometer indicates normal rpm within how much time?

    • A.

      35 sec.

    • B.

      85 sec.

    • C.

      60 sec

    • D.

      No time limit

    Correct Answer
    B. 85 sec.
    Explanation
    The APU tachometer indicates normal rpm within 85 seconds. This means that it takes approximately 85 seconds for the APU (Auxiliary Power Unit) to reach its normal operating speed. The tachometer is a device used to measure the rotational speed of the APU, and once it reaches the normal rpm, it indicates that the APU is ready for use.

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  • 23. 

    If the outside temperature is below 0 deg C, 32 deg F, how long must you wait to apply a load to the APU?

    • A.

      A. 2 min

    • B.

      B. 4 min

    • C.

      C. 5 min.

    • D.

      D. No warm up period

    Correct Answer
    B. B. 4 min
    Explanation
    When the outside temperature is below freezing point (0 deg C, 32 deg F), it is necessary to wait for a certain period of time before applying a load to the APU (Auxiliary Power Unit). This is because at such low temperatures, the APU needs time to warm up and reach its optimal operating temperature. Waiting for 4 minutes allows the APU to warm up sufficiently before applying a load, ensuring proper functioning and preventing potential damage.

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  • 24. 

    Under normal temps, how long must you wait to apply a load to the new APU?

    • A.

      2 min

    • B.

      1 min

    • C.

      5 min

    • D.

      No warm-up period.

    Correct Answer
    B. 1 min
    Explanation
    The correct answer is 1 min. After starting a new APU, it is recommended to wait for at least 1 minute before applying a load. This allows the APU to stabilize and reach its optimal operating temperature. Applying a load too soon can put unnecessary stress on the APU and potentially damage it. Therefore, it is important to wait for the specified warm-up period before using the APU.

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  • 25. 

    If the battery was used to start the APU, how soon should you turn the APU generator on?

    • A.

      2 min.

    • B.

      4 min.

    • C.

      As soon as practical to provide electrical power

    • D.

      6 min.

    Correct Answer
    C. As soon as practical to provide electrical power
    Explanation
    The correct answer is "As soon as practical to provide electrical power." When the battery is used to start the APU (Auxiliary Power Unit), it is important to turn on the APU generator as soon as possible to ensure a continuous supply of electrical power. This will help prevent any interruption or loss of power during the operation of the aircraft.

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  • 26. 

    While monitoring the leading-edge temperature indicators during APU operation you notice a rise in temperature. What does this indicate and what must you do?

    • A.

      Leak in cargo comp, A/C, turn bleed air off.

    • B.

      Normal operation, keep running, monitor system.

    • C.

      Anti-icing valve is open and APU must be shut down.

    • D.

      Ambient temperature is hot, normal operation, keep running.

    Correct Answer
    C. Anti-icing valve is open and APU must be shut down.
  • 27. 

    How long do you have to wait for the APU to stabilize after turning the APU generator control switch off prior to shutdown?

    • A.

      No time limit.

    • B.

      3 min

    • C.

      4 min

    • D.

      1 min

    Correct Answer
    D. 1 min
    Explanation
    After turning the APU generator control switch off prior to shutdown, you only need to wait for 1 minute for the APU to stabilize. This suggests that the APU stabilizes quickly and does not require a long waiting period before shutting down.

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  • 28. 

    What is the first step in the APU emergency shutdown steps?

    • A.

      DISCHARGE AGENT

    • B.

      PULL FIRE CONTROL HANDLE.

    • C.

      EVACUATE AIRPLANE.

    • D.

      CALL GROUND

    Correct Answer
    B. PULL FIRE CONTROL HANDLE.
    Explanation
    The correct answer is "PULL FIRE CONTROL HANDLE." In the event of an APU emergency shutdown, the first step is to pull the fire control handle. This action helps to cut off the fuel supply and electrical power to the APU, preventing any further damage or potential fire hazards. It is a crucial initial step in ensuring the safety of the aircraft and its occupants.

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  • 29. 

    If you have frost but no ice on the intake screen you can still run the APU. 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    If there is frost on the intake screen but no ice, it means that the temperature is low enough to cause frost to form, but not low enough for the frost to turn into ice. The presence of frost indicates that there is moisture in the air, which can potentially damage the APU. However, since there is no ice, it suggests that the APU can still be operated safely without the risk of ice causing any issues. Therefore, the statement "If you have frost but no ice on the intake screen you can still run the APU" is true.

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  • 30. 

    How long may you hold the AGENT DISCHARGE SWITCH for?

    • A.

      1 or 2 Sec

    • B.

      2 Sec

    • C.

      2 min

    • D.

      No more than 2 sec

    Correct Answer
    D. No more than 2 sec
    Explanation
    The correct answer is "No more than 2 sec." This means that you should hold the AGENT DISCHARGE SWITCH for a maximum of 2 seconds. Holding it for longer than that may have negative consequences or be unnecessary.

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  • 31. 

    What may result if you hold the AGENT DISCHARGE switch for more than the recommended time?

    • A.

      Blow up a fire bottle

    • B.

      Nothing; it will operate normally.

    • C.

      Cause the fire extinguisher circuit breaker to trip and the system to become inop.

    • D.

      Discharge the agent.

    Correct Answer
    C. Cause the fire extinguisher circuit breaker to trip and the system to become inop.
    Explanation
    If the AGENT DISCHARGE switch is held for more than the recommended time, it can cause the fire extinguisher circuit breaker to trip and the system to become inoperable. This means that the fire extinguisher system will not be able to function properly, potentially leading to a dangerous situation if there is a fire. It is important to follow the recommended procedures and guidelines to ensure the safe and effective operation of the fire extinguisher system.

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  • 32. 

    IF there is a fire in the APU compartment what is the proper position of the AGENT DISCHARGE switch?

    • A.

      AGENT DISCHARGE switch to #1 and release, if it persists place switch to #2 and release.

    • B.

      Place switch to discharge agent.

    • C.

      Place switch to fire bottle.

    • D.

      Place switch to #1 position and hold it for 10 sec; if fire persists, evacuate airplane.

    Correct Answer
    A. AGENT DISCHARGE switch to #1 and release, if it persists place switch to #2 and release.
    Explanation
    In the event of a fire in the APU compartment, the proper position for the AGENT DISCHARGE switch is to place it to #1 and release. If the fire persists, the switch should then be placed to #2 and released. This suggests that there are two different levels or options for discharging the agent, and if the first option does not extinguish the fire, the second option should be tried.

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  • 33. 

    What position should the plane be parked in?

    • A.

      30 degrees into the wind, if practical.

    • B.

      15 degrees into the wind, if practical.

    • C.

      Doesn’t matter

    • D.

      Headed into the wind, if practical.

    Correct Answer
    D. Headed into the wind, if practical.
    Explanation
    The correct answer is "Headed into the wind, if practical." This is because parking the plane into the wind allows for better control during takeoff and landing. When the plane is facing into the wind, it experiences increased airflow over the wings, which generates more lift and reduces the groundspeed needed for takeoff. It also allows for better control during landing by reducing the groundspeed and providing a shorter landing distance. However, the practicality of parking into the wind depends on factors such as the wind direction and the available parking space.

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  • 34. 

    The aft cargo door and ramp controls should be placed in what positions prior to starting APU?

    • A.

      Ramp control to 6N or 3N.

    • B.

      Pump to OFF

    • C.

      Cargo door manual control handle to neutral position

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    Prior to starting the APU, the aft cargo door and ramp controls should be placed in specific positions. The ramp control should be set to either 6N or 3N, the pump should be turned off, and the cargo door manual control handle should be in the neutral position. All of these actions are necessary to ensure the proper functioning and safety of the cargo door and ramp controls before starting the APU.

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  • 35. 

    How should all 5 fire handles be positioned prior to starting APU?

    • A.

      APU pushed in, all of the rest pulled.

    • B.

      All pushed in.

    • C.

      All pulled out

    • D.

      APU pulled out, all of the rest pushed in

    Correct Answer
    B. All pushed in.
    Explanation
    Prior to starting the APU, all 5 fire handles should be positioned in the "pushed in" position. This means that the APU fire handle should be pushed in, and all the other fire handles should also be pushed in. This is the correct position to ensure that the fire suppression system is not activated and that there are no false alarms or accidental discharges of the fire extinguishing agent.

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  • 36. 

    Prior to starting the APU the condition levers should be in what position?

    • A.

      Ground idle

    • B.

      Run

    • C.

      Ground stop

    • D.

      Feather

    Correct Answer
    C. Ground stop
    Explanation
    Prior to starting the APU, the condition levers should be in the "Ground stop" position. This is because the ground stop position ensures that the APU remains off and prevents it from starting unintentionally. It is a safety precaution to ensure that the APU is not running when it is not required, such as during ground operations or maintenance.

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  • 37. 

    DC voltmeter should indicate a minimum of how many volts?

    • A.

      0

    • B.

      23

    • C.

      21

    • D.

      24

    Correct Answer
    C. 21
    Explanation
    A DC voltmeter should indicate a minimum of 21 volts. This means that if the voltage being measured is lower than 21 volts, the voltmeter will not provide an accurate reading. Therefore, any voltage below 21 volts will not be detected by the voltmeter.

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  • 38. 

    How do you verify the APU fire warning system is operating properly?

    • A.

      Place nacelle overheat switch to test.

    • B.

      Place turbine overheat to test.

    • C.

      Place fire test switch to test.

    • D.

      Place fire test switch to test, ensure all fire indicator warning lights come on.

    Correct Answer
    D. Place fire test switch to test, ensure all fire indicator warning lights come on.
    Explanation
    To verify the APU fire warning system is operating properly, the correct procedure is to place the fire test switch to test and ensure that all fire indicator warning lights come on. This test is necessary to ensure that the system is functioning correctly and that all warning lights are operational. By performing this test, any issues or malfunctions in the APU fire warning system can be identified and addressed promptly.

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  • 39. 

    What purpose does the APU door serve?

    • A.

      Keeps the FOD down

    • B.

      Serves no purpose.

    • C.

      Keeps the airflow regulated.

    • D.

      Fire containment within a fireproof area.

    Correct Answer
    D. Fire containment within a fireproof area.
    Explanation
    The APU door serves the purpose of fire containment within a fireproof area. This means that in case of a fire in the APU (Auxiliary Power Unit), the door helps to prevent the fire from spreading to other areas of the aircraft by containing it within the designated fireproof area. This is crucial for the safety of the aircraft and its passengers, as it helps to minimize the risk of a fire causing further damage or endangering the flight.

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  • 40. 

    If there is a failure in the APU inlet door actuator, for GROUND OPERATIONS ONLY, you may gain access to the actuator and

    • A.

      Reposition the actuator.

    • B.

      Can’t do anything

    • C.

      Install actuator simulator.

    • D.

      A and C

    Correct Answer
    D. A and C
    Explanation
    If there is a failure in the APU inlet door actuator during ground operations, you may gain access to the actuator and reposition it. Additionally, you can also install an actuator simulator. Both options A and C are correct.

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  • 41. 

    What should the AC voltmeter indicate for proper operation?

    • A.

      21-24 volts

    • B.

      110-124 volts

    • C.

      115 +/- 2 volts

    • D.

      115-118 volts

    Correct Answer
    C. 115 +/- 2 volts
    Explanation
    The AC voltmeter should indicate a voltage of 115 +/- 2 volts for proper operation. This range allows for a small margin of error in the voltage reading, ensuring that the voltmeter is accurately measuring the voltage within an acceptable tolerance.

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  • 42. 

    What should the frequency meter indicate for proper reading?

    • A.

      110-124 Hz

    • B.

      390-430 Hz

    • C.

      380-420 Hz

    • D.

      Doesn’t have a limit

    Correct Answer
    C. 380-420 Hz
    Explanation
    The frequency meter should indicate a reading between 380-420 Hz for a proper reading. This range of frequencies is the correct range that the meter should measure in order to provide accurate results. Frequencies outside of this range may not be properly detected or measured by the meter.

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  • 43. 

    What T.O. is used to service the APU oil tank?

    • A.

      1C-130H-2-71JG-00-2

    • B.

      1C-130H-2-49JG-00-1

    • C.

      1C-130H-2-05JG-00-1.

    • D.

      1C-130H-2-12JG-10-2

    Correct Answer
    D. 1C-130H-2-12JG-10-2
  • 44. 

    If the APU fire warning system is not operating properly you may run the APU.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    If the APU fire warning system is not operating properly, it is not safe to run the APU. The fire warning system is designed to detect any potential fire in the APU and alert the pilot. Without a functioning fire warning system, the pilot would not be aware of any fire hazard, increasing the risk of an APU fire going undetected and potentially causing a catastrophic event. Therefore, it is important to ensure that the APU fire warning system is working properly before running the APU.

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  • 45. 

    After placing the Anti-ice overheat circuit test switch to the test position, what should result?

    • A.

      All lights should stay out

    • B.

      All six lights should illuminate

    • C.

      All seven lights should illuminate

    • D.

      Don’t worry about testing them

    Correct Answer
    C. All seven lights should illuminate
  • 46. 

    Once you clear the APU door area and place the APU control switch to run, what should happen?

    • A.

      The APU start light should illuminate.

    • B.

      The APU door open light should illuminate.

    • C.

      The APU door should open.

    • D.

      Both B and C.

    Correct Answer
    D. Both B and C.
    Explanation
    Once you clear the APU door area and place the APU control switch to run, both the APU door open light should illuminate and the APU door should open. This means that when the APU control switch is set to run, it activates the mechanism to open the APU door and simultaneously illuminates the APU door open light to indicate that the door is indeed opening.

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  • 47. 

    Failure of the APU inlet door to open could be the result of what?

    • A.

      The APU could be low on oil

    • B.

      The APU doesn’t have enough hydraulic fluid to open the door.

    • C.

      The APU door actuator has failed

    • D.

      Both A and C.

    Correct Answer
    D. Both A and C.
    Explanation
    The failure of the APU inlet door to open could be the result of two possible reasons. Firstly, it could be due to the APU being low on oil, which can prevent the door from opening properly. Secondly, it could be because the APU door actuator has failed, which means it is unable to open the door. Therefore, both options A and C are correct explanations for the failure of the APU inlet door to open.

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  • 48. 

    On ACFT AF95-1001 and up, the tachometer indicator requires how many VAC and Hz to provide RPM indicators?

    • A.

      24 VAC and 380 Hz

    • B.

      21 VAC and 420 Hz

    • C.

      115 VAC and 400 Hz

    • D.

      110 VAC and 400 Hz

    Correct Answer
    C. 115 VAC and 400 Hz
    Explanation
    The tachometer indicator on ACFT AF95-1001 and up requires 115 VAC and 400 Hz to provide RPM indicators.

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  • 49. 

    When checking bleed air pressure ducts, start/stop timing when pressure has dropped to what psi?

    • A.

      35/15 psi

    • B.

      16/8.5 psi

    • C.

      8.5/15 psi

    • D.

      30/15 psi

    Correct Answer
    D. 30/15 psi
    Explanation
    The correct answer is 30/15 psi. When checking bleed air pressure ducts, the start/stop timing should be done when the pressure has dropped to 30/15 psi. This indicates that the pressure has reached a safe level for inspection and maintenance purposes.

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  • 50. 

    What is the manifold bleed air pressure for the new APU?

    • A.

      A. 35 +/- 3 psi

    • B.

      B. no limit

    • C.

      C. 35 +/- 5

    • D.

      D. 45 +/- 5

    Correct Answer
    D. D. 45 +/- 5
    Explanation
    The correct answer is d. 45 +/- 5. This means that the manifold bleed air pressure for the new APU should be 45 psi, with a tolerance of +/- 5 psi. This indicates that the acceptable range for the pressure is between 40 psi and 50 psi.

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Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 28, 2017
    Quiz Created by
    Joseph
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