Air Force Technical Order (Afto) Volume 2 Quiz

38 Questions | Total Attempts: 842

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Air Force Technical Order (Afto) Volume 2 Quiz

The purpose of the Air Force TO system is to provide concise but clear instructions for safe and effective operation and maintenance of centrally-acquired and managed Air Force military systems and commodities. Have you finished studying the volume two? Use the quiz below as a revision text. All the best!


Questions and Answers
  • 1. 
    During operation of the EPU-6/E frequency converter it is determined that E and F pin voltage is not needed for the aircraft.  The operator places the loop/bypass/28V to aircraft switch to what position. 
    • A. 

      28V to aircraft

    • B. 

      Neutral

    • C. 

      Bypass

    • D. 

      Loop

  • 2. 
    What  components receive potential directly from the input auto transformer?
    • A. 

      Analog board and alarm display.

    • B. 

      Control transformer and voltage control.

    • C. 

      Input circuit breaker and display power supply.

    • D. 

      SCR voltage regulator and phase sequence transformer.

  • 3. 
    What components on the EPU-6/E frequency converter must be inspected prior to use?
    • A. 

      Air inlets for blockage.

    • B. 

      Wiring for secure mounting.

    • C. 

      Maintenance panels for corrosion.

    • D. 

      Interior air vents for secure mounting

  • 4. 
    What is the minimum interval at which the input and output terminals of the EPU-6/E are inspected?
    • A. 

      Daily.

    • B. 

      Annually.

    • C. 

      Prior to use.

    • D. 

      Semiannually.

  • 5. 
    During operation of the EPU-6/E frequency converter the operator determines that there is an under voltage (UV) fault problem with the unit. What component could be malfunctioning?
    • A. 

      The analog board has failed.

    • B. 

      The output trim potentiometer is centered.

    • C. 

      The voltage control board potentiometer is shortened.

    • D. 

      The audible alarm switch is in the silence position.

  • 6. 
    During operation of the EPU-6/E frequency converter the operator determines that one phase voltage is lower than the other two phases.  What could cause this malfunction?
    • A. 

      Malfunctioning transistor.

    • B. 

      Improper SCR firing adjustment.

    • C. 

      Burnt control transformer fuse.

    • D. 

      Loose push-on connector on the output filter capacitor.

  • 7. 
    What is the function of the deswirl ring on an A/M32A-95 gas turbine compressor?
    • A. 

      Accelerate Air.

    • B. 

      Decrease air velocity.

    • C. 

      Increase air pressure.

    • D. 

      Smooth turbulent air flow.

  • 8. 
    What component on an A/M32A-95 gas turbine compressor isolates the second stage air from the operation of the first stage compressor?
    • A. 

      Interstage ducts.

    • B. 

      Interstage seal.

    • C. 

      Impellers.

    • D. 

      Inducers.

  • 9. 
    What A/M32A-95 gas turbine compressor engine component accelerates hot expanding gases and directs them into the nozzle ring?
    • A. 

      Torus assembly.

    • B. 

      Combustor can.

    • C. 

      Combustor cap.

    • D. 

      Plenum.

  • 10. 
    What prevents engine operation of an A/M32A-95 gas turbine compressor if oil pressure is low?
    • A. 

      Fuel safety switch.

    • B. 

      Oil pressure switch.

    • C. 

      Oil filter bypass valve.

    • D. 

      Oil pressure relief valve.

  • 11. 
    What prevents over-pressurization of the bearing cavity on an A/M32A-95 gas turbine compressor?
    • A. 

      Oil jet.

    • B. 

      Oil cooler.

    • C. 

      Scavenge pump.

    • D. 

      Oil tank vent line.

  • 12. 
    The acceleration limiter valve on the A/M32A-95 gas turbine compressor operates a poppet valve to control fuel flow to the atomizer using control air pressure combined with 
    • A. 

      Oil pressure.

    • B. 

      Fuel pressure.

    • C. 

      Spring tension

    • D. 

      Plenum air pressure.

  • 13. 
    On an A/M32A-95 gas turbine compressor what chambers are pressurized when the butterly valve is closed.
    • A. 

      1 & 3

    • B. 

      2 & 4

    • C. 

      1, 2, and 3.

    • D. 

      1, 3, and 4.

  • 14. 
    What component on the A/M32A-95 gas turbine compressor closes to complete the electrical circuit to the fuel solenoid and ignition unit?  
    • A. 

      Load switch.

    • B. 

      Oil pressure switch.

    • C. 

      Turbine start switch.

    • D. 

      35 percent centrifugal speed switch.

  • 15. 
    Refer to foldout 2. The A/M32A-95 gas turbine runs up to 60 percent but the battery is not charging. What is the probable cause of this trouble? 
    • A. 

      K4 energized and its contacts closed.

    • B. 

      K3 de-energized and its contacts opened.

    • C. 

      K4 de-energized and its contacts closed.

    • D. 

      K3 de-energized and the contacts did not remain closed.

  • 16. 
    Refer to foldout 2. During an operational check of an A/M32A-95 gas turbine compressor you place the air load switch S2 in the ON position.  The butterfly valve starts to open at 95 percent. What do you check?
    • A. 

      SV2

    • B. 

      S10

    • C. 

      TD2

    • D. 

      K6

  • 17. 
    Refer to foldout 2. What component on an A/M32A-95 gas turbine compressor energizes SV4?
    • A. 

      Master Switch

    • B. 

      Air Load Valve

    • C. 

      Air Load Switch

    • D. 

      Oil Pressure Switch

  • 18. 
    What preliminary set-up step, if skipped, would prevent the A/M32A-95 gas turbine compressor from starting. 
    • A. 

      Set-up Controls.

    • B. 

      Set Parking Brake.

    • C. 

      Open and secure the exhaust door.

    • D. 

      Ensure the turbine air inlet and exhaust outlets are free of obstructions.

  • 19. 
    Which switch on the A/M32A-95 gas turbine compressor starts the automatic starting cycle?
    • A. 

      Turbine start switch

    • B. 

      Air load switch

    • C. 

      Inhabit switch

    • D. 

      Master switch

  • 20. 
    Refer to foldout 2.  The A/M32A-95 engine cranks but doesn't start.  What is the probable cause of this trouble? 
    • A. 

      CB3 is open.

    • B. 

      S9 is shortened.

    • C. 

      SV1 coil is open.

    • D. 

      K7 is not energizing.

  • 21. 
    While you are operating an MA-3D conditioner, the output  air temperature is too high, so you set the temperature control to maximum  cooling.  The temperature controller sends a signal to   
    • A. 

      B7 which steps closed to meter refrigerant into the evaporator.

    • B. 

      B7 which steps open to meter refrigerant into the evaporator.

    • C. 

      The quench valve which opens to aid in cooling.

    • D. 

      S1 and S2 which open to aid in cooling

  • 22. 
    The temperature controller on an MA-3D air conditioner opens the hot gas bypass valve if the
    • A. 

      Suction air pressure is too high so the boiling point of refrigerant can be decreased.

    • B. 

      Air pressure is to low so the boiling point of R134a must be increased.

    • C. 

      Suction pressure is to high so the boiling point of the refrigerant must be decreased to decrease the output air temperature.

    • D. 

      Suction pressure is too low so the boiling point of the refrigerant must be increased to increase the output air temperature.

  • 23. 
    What component on an MA-3D air conditioner increases the ambient air temperature approximately 60 degrees Fahrenheit
    • A. 

      Blower.

    • B. 

      Compressor.

    • C. 

      Evaporator.

    • D. 

      Aftercooler

  • 24. 
    The heat sink on the MA-3D
    • A. 

      Circulates the ethylene glycol/water solution.

    • B. 

      Cools the ethylene glycol/water solution.

    • C. 

      Cools discharge air from the blower.

    • D. 

      Cools ambient air.

  • 25. 
    You place the MA-3D air conditioner SW1 in the START position, but the engine does not operate.  What is the probable cause of this trouble?
    • A. 

      K7 contacts are closed.

    • B. 

      Overspeed switch is closed.

    • C. 

      Override switch is not closed.

    • D. 

      Oil pressure switch is closed.

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