2A652 Aerospace Ground Equipment CDCS (Vol 4)

90 Questions | Total Attempts: 2975

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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

  • 26. 
    On the MC-2A rotary sliding vane compressor, the minimum pressure valve does all of the following except
    • A. 

      Ensure minimum pressure to the felt pads

    • B. 

      Ensure minimum pressure in the oil chamber

    • C. 

      Ensure minimum pressure to the condensate drain

    • D. 

      Prevent receiver air from flowing back to the compressor

  • 27. 
    What medium is used to cool the MC-2A rotary vane compressor?
    • A. 

      Oil

    • B. 

      Air

    • C. 

      Water

    • D. 

      Hydraulic fluid

  • 28. 
    On the MC-2A rotary sliding vane compressor, what forces the oil through the oil cooler?
    • A. 

      Oil pump pressure

    • B. 

      Scavenge pump pressure

    • C. 

      First stage air pressure

    • D. 

      Second stage air pressure

  • 29. 
    What is the output of the MC-2A rotary sliding vane compressor?
    • A. 

      High volume, high pressure

    • B. 

      High volume, low pressure

    • C. 

      Low volume, high pressure

    • D. 

      Low volume, low pressure

  • 30. 
    The valves on a reciprocating compressor are operated by
    • A. 

      Pushrods

    • B. 

      Air pressure

    • C. 

      Oil pressure

    • D. 

      Electrical input

    • E. 

  • 31. 
    During a service inspection, the dehydrators of an air compressor should be 
    • A. 

      Drained

    • B. 

      Replaced

    • C. 

      Checked for contamination

    • D. 

      Checked for hours since installation

  • 32. 
    What technical order (TO) contains the periodic inspection (PE) section?
    • A. 

      Operation and service TO

    • B. 

      Illustrated parts TO

    • C. 

      Lubrication chart TO

    • D. 

      Overhaul TO

  • 33. 
    To charge the receiver on the MC-2A air compressor, ensure the air control valve is closed and
    • A. 

      Let the engine idle

    • B. 

      Open the receiver drain valve

    • C. 

      Close the receiver drain valve

    • D. 

      Open the dehydrator drain valve

  • 34. 
    Prior to performing any maintenance on an air compressor airflow system, you should
    • A. 

      Drain the receiver

    • B. 

      Turn off all switches

    • C. 

      Disconnect the battery

    • D. 

      Relieve all air pressure

  • 35. 
    When analyzing an air compressor malfunction, you prioritize possible causes by 
    • A. 

      Starting with the simplest possibilities

    • B. 

      Starting at the last known source of power

    • C. 

      Starting with the most complex possibilities

    • D. 

      Replacing possible malfunctioning components

  • 36. 
    When performing a front end alignment on a nitrogen servicing unit, what component would you adjust to equalize the distance from each steering knuckle king pin to the center of the towbar lunette eye?
    • A. 

      Tie rod ends

    • B. 

      Clevis pins

    • C. 

      Steering knuckle

    • D. 

      Brake cable assembly

  • 37. 
    Prior to performing maintenance on a liquid oxygen (LOX) cart you should ensure that 
    • A. 

      The brake is holding

    • B. 

      Your tools are free of grease and oil and the cart is drained

    • C. 

      That it is parked on asphalt

    • D. 

      The shop doors are closed

  • 38. 
    The self generating nitrogen servicing cart (SGNSC) is categorized as a 
    • A. 

      High-pressure air compressor

    • B. 

      Low-pressure air compressor

    • C. 

      High volume air compressor

    • D. 

      Low volume air compressor

  • 39. 
    What component on the self generating nitrogen servicing cart (SGNSC) removes nitrogen from the ambient air?
    • A. 

      Filters

    • B. 

      Carbon absorber

    • C. 

      Booster compressor

    • D. 

      Separation membrane

  • 40. 
    The proper oil level in the feed air compressor lubricant separator tank on the self generating nitrogen servicing cart (SGNSC) should be
    • A. 

      2/3 to 3/4 up from the bottom of the sight glass

    • B. 

      2/3 to 3/4 down from the top of the sight glass

    • C. 

      1/2 up from the bottom of the sight glass

    • D. 

      1/2 down from the top of the sight glass

  • 41. 
    The radiator must be cleaned during a periodic inspection (PE) of a self generating nitrogen servicing cart (SGNSC) to 
    • A. 

      Remove corrosion

    • B. 

      Prevent corrosion

    • C. 

      Load the radiator

    • D. 

      Aid in heat transfer

  • 42. 
    To start the self generating nitrogen servicing cart (SGNSC) the operator must place the ignition switch in the start position for no more than
    • A. 

      5 seconds

    • B. 

      10 seconds

    • C. 

      15 seconds

    • D. 

      20 seconds

  • 43. 
    At what storage cylinder pressure should the self generating nitrogen servicing cart (SGNSC) stop producing nitrogen?
    • A. 

      2400 psig

    • B. 

      4100 psig

    • C. 

      4400 psig

    • D. 

      6400 psig

  • 44. 
    • A. 

      Poor air ventilation

    • B. 

      Booster compressor defective

    • C. 

      Low oil level in the feed air compressor lubricant separator tank

    • D. 

      Warming door is not lowered for cold weather operating conditions

  • 45. 
    What is important to keep in mind when performing maintenance on the self generating nitrogen servicing cart (SGNSC)?
    • A. 

      Safety

    • B. 

      Ventilation

    • C. 

      Wind Direction

    • D. 

      Weather conditions

  • 46. 
    When filling and bleeding the system of the MJ-2A-1 hydraulic test stand, the reservoir selector valve must be in the
    • A. 

      Open position

    • B. 

      Stand position

    • C. 

      External position

    • D. 

      Aircraft position

  • 47. 
    What component protects the MJ-2A-1 hydraulic test stand from overpressurization when the unit is not operating?
    • A. 

      High pressure relief valve

    • B. 

      Thermal relief valve

    • C. 

      Check/relief valve

    • D. 

      Fill relief valve

  • 48. 
    The purpose of the low pressure pump on the MJ-2A-1 is to ensure a constant flow of fluid to the
    • A. 

      Relief valve

    • B. 

      Aircraft pumps

    • C. 

      High pressure pump

    • D. 

      Low pressure filters

  • 49. 
    In the MJ-2A-1 hydraulic test stand, the output volume of the high pressure pump is controlled by the
    • A. 

      Volume control

    • B. 

      Flowmeter assembly

    • C. 

      Flow control valve

    • D. 

      Angel of the camplate

  • 50. 
    The flowmeter on a MJ-2A-1 hydraulic test stand shows a fluid
    • A. 

      Flow in the return system

    • B. 

      Pressure in the return system

    • C. 

      Flow in the high pressure system

    • D. 

      Pressure in the high pressure system

  • 51. 
    What engine system safety device on the MJ-2A-1 hydraulic test stand sounds the warning horn in the event of an engine system malfunction?
    • A. 

      Water level switch

    • B. 

      Oil pressure switch

    • C. 

      Fuel pressure switch

    • D. 

      Fuel level indicator

  • 52. 
    What switch provides an alternate means of energizing the fill pump when either of the micro switches are defective on the MJ-2A-1 hydraulic test stand?
    • A. 

      Fill switch, LS4

    • B. 

      Micro switch, FS1

    • C. 

      Engine master switch

    • D. 

      Soft start relay switch

  • 53. 
    When filling and bleeding the MJ-2A-1 hydraulic test stand, the system should be pressurized and bled until
    • A. 

      The sight tube is filled with bubbles

    • B. 

      Fluid in the sight tube is blue in color

    • C. 

      Fluid in the sight tube turns a milky color

    • D. 

      A solid column of fluid can be seen in the sight tube

  • 54. 
    What is the relationship between the settings of the high-pressure relief valve and the pressure compensator on the MJ-2A-1 hydraulic test stand?
    • A. 

      Compensator is set 300 psi above relief valve setting

    • B. 

      Relief valve is set 300 psi above required test setting

    • C. 

      Compensator is set 500 psi above relief valve setting

    • D. 

      Relief valve is set 500 psi above required test setting

  • 55. 
    A fresh hydraulic leak will be
    • A. 

      Oily and red

    • B. 

      Oily and pink

    • C. 

      Sticky and red

    • D. 

      Sticky and pink

  • 56. 
    What type of wrench should be used on brass or aluminum fittings?
    • A. 

      Adjustable wrench

    • B. 

      Open end wrench

    • C. 

      Box end wrench

    • D. 

      Tubing wrench

  • 57. 
    When a line is removed from a hydraulic test stand, you should
    • A. 

      Replace it with the same type of line

    • B. 

      Mark all the location of the line

    • C. 

      Seal all openings

    • D. 

      All of the above

  • 58. 
    What prevents overpressurization of the steering system of the MJ-1B bomblift?
    • A. 

      Bleed valve

    • B. 

      Relief valve

    • C. 

      Bypass valve

    • D. 

      Pressure regulator

  • 59. 
    Continuous movement of pressurized hydraulic fluid in the MJ-1B bomblift causes the fluid to become
    • A. 

      Cooled

    • B. 

      Heated

    • C. 

      Compressed

    • D. 

      Contaminated

  • 60. 
    When using the hand pump of the MJ-1B bomblift, the check valve prevents fluid from returning to the
    • A. 

      Piston pump

    • B. 

      Hydraulic tank

    • C. 

      Hydrostatic pump

    • D. 

      Hydrostatic motor

  • 61. 
    What component of the MJ-1B bomblift converts hydraulic pressure into mechanical motion?
    • A. 

      Engine

    • B. 

      Piston pump

    • C. 

      Lift arm cylinders

    • D. 

      Cradle control valves

  • 62. 
    What valve on the MJ-1B bomblift prevents collapsing of the cantilever lifting arms in the even of hydraulic pressure failure?
    • A. 

      Air bleed

    • B. 

      Rotary by-pass

    • C. 

      Counterbalance

    • D. 

      Over pressurization

  • 63. 
    As soon as the engine of the MJ-1B starts, you should check for sufficient
    • A. 

      Oil pressure

    • B. 

      Fuel pressure

    • C. 

      Battery charging

    • D. 

      Hydraulic pressure

  • 64. 
    During an operational check of the MJ-1B bomblift, all hydraulic components should exhibit
    • A. 

      Movement only when actuated

    • B. 

      No jumping movements

    • C. 

      No binding movements

    • D. 

      All of the above

  • 65. 
    What component(s) on the MHU83C/E bomblift supplies the brake valve and calipers with fluid?
    • A. 

      System pump

    • B. 

      Steering pump

    • C. 

      Transmission pump

    • D. 

      Hydraulic system control valves

  • 66. 
    How do you verify the proper operation of the centering mechanism on the MHU83C/E bomblift?
    • A. 

      Unit should move in neutral

    • B. 

      Unit should start in reverse

    • C. 

      Unit should not move in neutral

    • D. 

      Unit should not start in reverse

  • 67. 
    You check the backup hydraulic system on the MHU83C/E bomblift by
    • A. 

      Closing the shutoff valve

    • B. 

      Operating the hand pump

    • C. 

      Closing the air bleed valve

    • D. 

      Operating the system pump

  • 68. 
    If the unit technical order (TO) and workcards conflict during an inspection, the procedure you should follow is
    • A. 

      Unit TO information

    • B. 

      Workcard requirements

    • C. 

      Locally established directives

    • D. 

      Workcard requirements first, then the TO information next

  • 69. 
    If the started failed to operate on a bomblift, which step should you take first?
    • A. 

      Check the starter cables

    • B. 

      Remove and replace the starter

    • C. 

      Remove and replace the battery

    • D. 

      Check the battery terminals and posts

  • 70. 
    When troubleshooting the electrical system on the MJ-1B bomblift, what component will give you a visual indication that the alternator is charging?
    • A. 

      Ammeter

    • B. 

      Voltmeter

    • C. 

      Head light

    • D. 

      Control panel light

  • 71. 
    The most obvious and easiest way of isolating most hydraulic malfunctions is to look for
    • A. 

      Slow operation

    • B. 

      Erratic operation

    • C. 

      Fluid under the unit

    • D. 

      Movement when control valve is not actuated

  • 72. 
    What is used to raise the mast on the FL-1D?
    • A. 

      Screw mechanism

    • B. 

      Pneumatic controls

    • C. 

      Hydraulic cylinder

    • D. 

      Hand-operated cable

  • 73. 
    What can be used to relieve tension from the lock to disengage the latch from the striker plate on the FL-1D when lowering the mast?
    • A. 

      Screw mechanism

    • B. 

      Pneumatic control

    • C. 

      Hydraulic cylinder

    • D. 

      Mast erection crank

  • 74. 
    Where can you find test procedures for a particular component?
    • A. 

      Unit TO

    • B. 

      Illustrated parts breakdown

    • C. 

      Service inspection workcards

    • D. 

      Periodic inspection workcards

  • 75. 
    Which item is a phase 1 periodic inspection (PE) step?
    • A. 

      Engine oil change

    • B. 

      Throughly inspect the engine

    • C. 

      Paint condition and reflectorization

    • D. 

      Inspect the internal generator components

  • 76. 
    On the outriggers of the split deck maintenance platform, what prevents accidental loss of cylinder extension pressure?
    • A. 

      A limit switch

    • B. 

      Pressure switches

    • C. 

      Electric solenoids on each cylinder

    • D. 

      A pilot check valve on each cylinder

  • 77. 
    What are the two lifting capacities of the davit (lift pulley) on the maintenance platform?
    • A. 

      2000 lbs

    • B. 

      250 lbs or 500 lbs

    • C. 

      350 lbs or 550 lbs

    • D. 

      1000 lbs or 2000 lbs

  • 78. 
    What switch, when turned to the OFF position will prevent all control console functions except platform lowering and engine operation?
    • A. 

      Lift switch

    • B. 

      Engine switch

    • C. 

      Emergency switch

    • D. 

      Mode selection switch

  • 79. 
    While operating the split deck maintenance platform you realize the platform will not lower; the probable cause could be
    • A. 

      Corroded battery cables

    • B. 

      The main disconnect switch is ON

    • C. 

      A defective control cable

    • D. 

      The engine switch is in RUN position

  • 80. 
    What component provides manual speed adjustment on the AF/M32T-1 cabin leakage tester?
    • A. 

      Throttle

    • B. 

      Tachometer

    • C. 

      Diesel engine

    • D. 

      Fuel system relief valve

  • 81. 
    You observe low cabin pressure reading during operation of the AF/M32T-1 cabin leakage tester; a probable cause could be a defective
    • A. 

      Flowmeter

    • B. 

      Rate valve

    • C. 

      Cabin pressure gauge

    • D. 

      Blower pressure gauge

  • 82. 
    What is the fluid capacity and system pressure of the hydraulic pump on the B-6, 10-ton hydraulic tripod jack?
    • A. 

      2.1 gallons at 2250 psi

    • B. 

      1.0 gallons at 1135 psi

    • C. 

      1.1 gallons at 2235 psi

    • D. 

      1.5 gallons at 2200 psi

  • 83. 
    What component on the B-1 adjustable aircraft maintenance platform allows the work platform and steps to remain parallel to the base at any desired platform height?
    • A. 

      Base assembly

    • B. 

      Upper platform

    • C. 

      Stair support linkage

    • D. 

      Hydraulic cylinder assembly

  • 84. 
    What controls the speed of retraction of the hydraulic cylinder assembly on the B-1 adjustable aircraft maintenance platform?
    • A. 

      A handle on the bypass valve

    • B. 

      The upper structure assembly

    • C. 

      The flow control valve

    • D. 

      The pump handle

  • 85. 
    The B-4 adjustable aircraft maintenance platform can attain heights of a minimum of
    • A. 

      Two feet to a maximum of five feet

    • B. 

      Three feet to a maximum of seven feet

    • C. 

      Three feet to a maximum of twelve feet

    • D. 

      Three feet to a maximum of fifteen feet

  • 86. 
    The purpose of the lift mechanism on the towbar is to
    • A. 

      Adjust the forks

    • B. 

      Suppose the running gear

    • C. 

      Stabilize the main tube assembly

    • D. 

      Raise and lower the wheel assemblies

  • 87. 
    What is the capacity of the overflow tank on the oil cart?
    • A. 

      3 gallons

    • B. 

      2 gallons

    • C. 

      1 gallon

    • D. 

      2.5 gallons

  • 88. 
    When servicing the hydraulic cart, what prevents large particles in the fluid from entering the reservoir?
    • A. 

      Line filter

    • B. 

      Check valve

    • C. 

      Mesh screen

    • D. 

      Relief valve

  • 89. 
    The maximum adjustments for the high and low pressure relief valves on the hydraulic cart are
    • A. 

      Low pressure (LP) 3300 pounds per square inch (psi), high pressure (HP) 100 psi

    • B. 

      HP 3300 psi, LP 100 psi

    • C. 

      HP 3500, LP 110

    • D. 

      HP 2300, LP 150

  • 90. 
    What are some of the most common types of maintenance performed on the portable hoist assembly?
    • A. 

      Repairing cracks and replacing castors

    • B. 

      Replacing winch cables

    • C. 

      Hydraulic fluid changes

    • D. 

      Changing flat tires