5 Level Volume 3

111 Questions | Total Attempts: 68

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5 Level Volume 3

Practical testing for Trainees


Questions and Answers
  • 1. 
     (401) What is the composition of JP–8 fuel?
    • A. 

      Gasoline and kerosene.

    • B. 

      Gasoline and diesel fuel.

    • C. 

      Diesel fuel and kerosene.

    • D. 

      Diesel fuel and aviation gasoline.

  • 2. 
     (401) At room temperature, how many times longer will it take water to settle out of JP–8 than out of gasoline?
    • A. 

      Two

    • B. 

      Three

    • C. 

      Four

    • D. 

      Five

  • 3. 
     (401) Jet aircraft operating at moderately high altitudes increase the fuel system’s susceptibility to an icing condition, further aggravated by the
    • A. 

      Lower viscosity of jet fuels.

    • B. 

      Higher viscosity of jet fuels.

    • C. 

      Lower viscosity of free water.

    • D. 

      Higher viscosity of free water.

  • 4. 
     (402) The main fuel control allows the jet engine to safely accelerate, reducing the possibility of
    • A. 

      Flameout.

    • B. 

      Turbine seizure.

    • C. 

      Compressor shift.

    • D. 

      Overtemperature.

  • 5. 
     (402) During a visual inspection, how can you tell when a fuel filter is clogged?
    • A. 

      A green flag pops out of the filter.

    • B. 

      Fuel pressure from the fuel pump is low.

    • C. 

      A differential pressure indicator is actuated.

    • D. 

      There is no way to tell without disassembling the filter.

  • 6. 
     (403) On a dual-spool, axial-flow engine, what controls thrust production of the engine?
    • A. 

      Regulating engine RPM.

    • B. 

      Regulating compressor discharge pressure.

    • C. 

      Controlling turbine exhaust pressure.

    • D. 

      Controlling turbine inlet temperature.

  • 7. 
     (403) During jet engine deceleration, a hydromechanical fuel control schedules fuel flow as a function of
    • A. 

      RPM

    • B. 

      Inlet temperature.

    • C. 

      Burner pressure.

    • D. 

      Inlet pressure.

  • 8. 
    (403) What type of fuel control uses items such as thermocouples, relays, amplifiers, and solenoids to help control a jet engine?
    • A. 

      Pneumatic.

    • B. 

      Fuel injection.

    • C. 

      Hydromechanical.

    • D. 

      Electrohydromechanical.

  • 9. 
    (403) Which term describes a jet engine fuel metering device that is really two fuel controls in one component?
    • A. 

      Unified.

    • B. 

      Combined

    • C. 

      Bimechanical.

    • D. 

      Electrosecondary.

  • 10. 
    (403) The F100 UFC senses certain variables from the engine through the use of
    • A. 

      A closed loop design.

    • B. 

      An open circuit design.

    • C. 

      The feedback control unit.

    • D. 

      A direct mechanical connection to all engine sensors.

  • 11. 
    (403) If the safety seals on a fuel system component are broken or removed, and you suspect the factory adjustment was altered, you should
    • A. 

      Adjust and reseal the component.

    • B. 

      Keep the component in service to meet the mission.

    • C. 

      Forward the component to the authorized depot for reflow and resealing.

    • D. 

      Continue to keep the component in service if it is documented as a red diagonal on Form 781A, Hydromechanical Fuel Control.

  • 12. 
    (403) Calibration and/or adjustment screws that require setting during an engine trim procedure must be
    • A. 

      Replaced.

    • B. 

      Die marked.

    • C. 

      Safety sealed and/or lockwired.

    • D. 

      Treated with a thread locking compound.

  • 13. 
    (404) When in the primary mode, what controls the operation of the F100-PW–220 engine?
    • A. 

      MEC

    • B. 

      PMG.

    • C. 

      TSFC.

    • D. 

      DEEC.

  • 14. 
    (404) On an F100-PW–220 engine, the DEEC is cooled by
    • A. 

      Oil

    • B. 

      Fuel.

    • C. 

      Ram air.

    • D. 

      Hydraulic fluid.

  • 15. 
    (404) For actuation of the variable vane systems on an F100-PW–220 engine, the MFC provides both the CIVV and
    • A. 

      Rear compressor variable vane actuators with pneumatic (air) pressure.

    • B. 

      Rear compressor variable vane actuators with fuel pressure.

    • C. 

      Variable exhaust nozzle actuators with pneumatic pressure.

    • D. 

      Variable exhaust nozzle actuators with fuel pressure.

  • 16. 
    (404) Which F100-PW–220 engine fuel system component controls pressurization of the core engine fuel system?
    • A. 

      Fuel nozzle

    • B. 

      P&D valve.

    • C. 

      N2 sensor

    • D. 

      Tt 2.5 sensor.

  • 17. 
    (404) Which stage of compressor air drives the augmenter fuel pump on an F100-PW–220 engine?
    • A. 

      7th

    • B. 

      10th

    • C. 

      13th.

    • D. 

      14th.

  • 18. 
    (404) On the F100-PW–220 engine, which component controls the augmentor fuel control?
    • A. 

      Fuel pump.

    • B. 

      Fuel pump controller.

    • C. 

      Signature elimination probe.

    • D. 

      DEEC.

  • 19. 
    (404) Core engine fuel flow sequence on an F100-PW–220 engine starts at the main fuel pump and then goes through the
    • A. 

      AFP, AFC, fuel/oil cooler, P&D, and fuel nozzles.

    • B. 

      MFC, fuel/oil cooler, P&D, and fuel nozzles.

    • C. 

      AFC, AFP, fuel/oil cooler, P&D, and fuel nozzles.

    • D. 

      Fuel/oil cooler, P&D, MFC, and fuel nozzles.

  • 20. 
    (405) When classified as to structure, which of the following is not a type of an oil pump?
    • A. 

      Gear.

    • B. 

      Gerotor.

    • C. 

      Rotogear.

    • D. 

      Sliding vane.

  • 21. 
    (405) Which type of oil pump consists of a gear and rotor within a housing?
    • A. 

      Gear.

    • B. 

      Gerotor.

    • C. 

      Rotogear.

    • D. 

      Sliding vane.

  • 22. 
      (405) One micron is a metric linear measurement that is equal to
    • A. 

      1/25 inch.

    • B. 

      1/250 inch.

    • C. 

      1/2,500 inch.

    • D. 

      1/25,000 inch.

  • 23. 
      (405) Chip detectors have an electrical connection for making which type of check?
    • A. 

      AC high-voltage.

    • B. 

      DC high-voltage.

    • C. 

      Continuity.

    • D. 

      Polarity.

  • 24. 
      (405) Which type of valve permits oil flow in only one direction?
    • A. 

      Check.

    • B. 

      Relief.

    • C. 

      Bypass.

    • D. 

      Pressurizing.

  • 25. 
      (405) Which type of oil cooler operates on the same principle as a radiator in an automobile?
    • A. 

      Air/oil.

    • B. 

      Fuel.

    • C. 

      Hydraulic.

    • D. 

      Pneumatic

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