2A652 Aerospace Ground Equipment CDCs (Vol 4)

90 Questions | Total Attempts: 2979

SettingsSettingsSettings
Please wait...
2A652 Quizzes & Trivia

This is a quiz on Aerospace Ground Equipment CDC (Vol 4) 2A652


Questions and Answers
  • 1. 
    What component on the New Generation Heater activates the heater control unit (HCU)?
    • A. 

      Heat control switch

    • B. 

      Burner control unit

    • C. 

      Thermostatic sensor

    • D. 

      Oil pressure switch

  • 2. 
    When does the heater control unit (HCU) on the New Generation Heater start the main air fan for output air?
    • A. 

      When a heat setting is selected

    • B. 

      Once constant flame is established

    • C. 

      When the temperature gauge reads COOL

    • D. 

      When the inside temperature reaches 140 degrees F

  • 3. 
    When should you use starting aids to start the New Generation Heater?
    • A. 

      Never

    • B. 

      Occasionally

    • C. 

      When the temperature gauge reads COOL

    • D. 

      When ambient temperature is below 32 degrees F

  • 4. 
    When operating the New Generation Heater, turn the heat control switch to the desired position after
    • A. 

      Ample warm-up time

    • B. 

      A minimum of 45 seconds

    • C. 

      System voltage rises to 120 VAC

    • D. 

      The inside temperature reaches 140 degrees F

  • 5. 
    If you need to find out how to perform any maintenance required during an inspection, you should refer to the 
    • A. 

      -1 TO

    • B. 

      PE workcards

    • C. 

      Methods and procedures TO

    • D. 

      Service inspection workcards

  • 6. 
    The type of inspection that requires the most tear down of specific components is the
    • A. 

      Daily inspection

    • B. 

      Service inspection

    • C. 

      Special inspection

    • D. 

      Periodic inspection

  • 7. 
    The first step of troubleshooting heater equipment is
    • A. 

      Analysis

    • B. 

      Isolation

    • C. 

      Recognition

    • D. 

      Verification

  • 8. 
    Repair of ground heater equipment should never be attempted 
    • A. 

      Without first talking with the operator

    • B. 

      Without first consulting your supervisor

    • C. 

      Unless accurate technical data is available

    • D. 

      Unless the presence of an experienced mechanic

  • 9. 
    The amount of heat required to raise the temperature of one pound of substance one degree Fahrenheit is known as
    • A. 

      Super heat

    • B. 

      Latent heat

    • C. 

      British Thermal Unit (BTU)

    • D. 

      Sensible heat

  • 10. 
    Heat that can be felt, and added or subtracted to a substance without changing its state is called
    • A. 

      Super heat

    • B. 

      Latent heat

    • C. 

      Specific heat

    • D. 

      Sensible heat

  • 11. 
    The heat that changes the state of a substance, yet does not affect the temperature is called
    • A. 

      Super heat

    • B. 

      Latent heat

    • C. 

      Specific heat

    • D. 

      Sensible heat

  • 12. 
    Heat added to a gaseous substance is known as
    • A. 

      Super heat

    • B. 

      Latent heat

    • C. 

      Specific heat

    • D. 

      Sensible heat

  • 13. 
    A good refrigerant would
    • A. 

      Operate with low pressure

    • B. 

      Have a low boiling point

    • C. 

      Not be poisonous

    • D. 

      Operate with low pressure, have a low boiling point, and not be poisonous

  • 14. 
    What component on the MA-3D air conditioner allows the operator to control the overall volume of air leaving the unit?
    • A. 

      Blower control switch

    • B. 

      Airflow control switch

    • C. 

      Evaporator control switch

    • D. 

      Temperature control switch

  • 15. 
    After the refrigerant leaves the compressor on the MA-3D air conditioner, it flows through the 
    • A. 

      Heatsink coils

    • B. 

      Condensor coils

    • C. 

      Evaporator coils

    • D. 

      Receiver inlet valve

  • 16. 
    The temperature controller on the MA-3D air conditioner modulates the water flow through what component during low ambient air temperatures?
    • A. 

      Aftercooler coil

    • B. 

      Refrigerant coil

    • C. 

      Expansion coil

    • D. 

      Condenser coil

  • 17. 
    When starting the MA-3D air conditioner, hold the safety override switch until 
    • A. 

      The engine starts

    • B. 

      The engine warms up

    • C. 

      You release the start switch

    • D. 

      30 psi oil pressure is registered on the engine oil pressure gauge

  • 18. 
    What component on the MA-3D air conditioner shuts off the compressors when refrigerant pressure entering the evaporator coil reaches 5psi?
    • A. 

      Low pressure cutout

    • B. 

      High pressure cutout

    • C. 

      Temperature controller

    • D. 

      Temperature control switch

  • 19. 
    What equipment inspection requires the inspection of only asterisked items in the workcards?
    • A. 

      Annual

    • B. 

      Phase 1

    • C. 

      Service

    • D. 

      Phase 2

  • 20. 
    What type of refrigerant system leak occurs when the pressure within the system is less than atmospheric pressure?
    • A. 

      Vaccum leaks

    • B. 

      Inward leaks

    • C. 

      Outward leaks

    • D. 

      Pressure leaks

  • 21. 
    The refrigerant on the air conditioner is always removed through the
    • A. 

      Purge valve

    • B. 

      Receiver inlet valve

    • C. 

      Receiver outlet valve

    • D. 

      Discharge service valve

  • 22. 
    The air cycle machine of an A/M32C-10D air conditioner consists of 
    • A. 

      An expansion turbine only

    • B. 

      An air compressor fan only

    • C. 

      A heat exchanger and an expansion turbine

    • D. 

      An expansion turbine and an air compressor fan

  • 23. 
    On a basic rotary compressor, what prevents air from leaving the discharge port while the intake port is taking air in?
    • A. 

      Sliding barrier

    • B. 

      Discharge valve

    • C. 

      Rotating barrier

    • D. 

      Stationary barrier

  • 24. 
    Oil in the rotary vane compressor
    • A. 

      Lubricates the connecting rods

    • B. 

      Has high viscosity and is very inflammable

    • C. 

      Forms a seal between the vanes and the stator

    • D. 

      Permits it to be typed as a high pressure unit

  • 25. 
    What provides pressurized oil to the rotor blades of the MC-2A rotary sliding vane compressor?
    • A. 

      Rotor shaft

    • B. 

      Stator shaft

    • C. 

      Drilled passages

    • D. 

      Hollow-ported bolt