CDC 2AX5X - Aerospace Maintenance Journeyman

348 Questions | Total Attempts: 168

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CDC 2AX5X - Aerospace Maintenance Journeyman

Questions and Answers
  • 1. 
    The methods used to cool brushless alternating current (AC) generators are
    • A. 

      Blast air and ram air

    • B. 

      Engine oil and blast air

    • C. 

      Blast air and generator oil

    • D. 

      Generator oil and engine oil

  • 2. 
    The output of the constant speed drive (CSD) used to drive a 60/80 kilovolt ampere (KVA) generator is approximately
    • A. 

      4,000 rpm

    • B. 

      6,000 rpm

    • C. 

      8,000 rpm

    • D. 

      10,000 rpm

  • 3. 
    The underspeed switch (USS) on the 60/80 kilovolt ampere (KVA) generator constant speed drive (CSD) actuates at
    • A. 

      325 Hz

    • B. 

      345 Hz

    • C. 

      365 Hz

    • D. 

      395 Hz

  • 4. 
    What supplies rotary power to the input gear of the constant speed drive (CSD)?
    • A. 

      Accessory gearbox

    • B. 

      Transmission shaft

    • C. 

      Torque converter

    • D. 

      Hydraulic gear

  • 5. 
    A battery's internal component that is a grid or framework which supports the active chemical materials is called the
    • A. 

      Plate

    • B. 

      Separator

    • C. 

      Electrolyte

    • D. 

      Chemical solution

  • 6. 
    A 24-volt nickel-cadmium battery has
    • A. 

      12 cells

    • B. 

      19 cells

    • C. 

      20 cells

    • D. 

      24 cells

  • 7. 
    The nickel-cadmium battery can be fully charged only by
    • A. 

      Pulsating current

    • B. 

      Constant current

    • C. 

      Varying current

    • D. 

      Eddy current

  • 8. 
    What type of motor can operate on alternating current (AC) or direct current (DC)?
    • A. 

      Shunt

    • B. 

      Circuit

    • C. 

      Universal

    • D. 

      Compound

  • 9. 
    A shunt-type motor has
    • A. 

      Less speed regulation than a universal motor

    • B. 

      A field winding in a series with the armature

    • C. 

      Low starting torque and good speed regulation

    • D. 

      High starting torque and poor speed regulation

  • 10. 
    The three states of matter are
    • A. 

      Liquids, gasses, and minerals

    • B. 

      Gasses, solids, and minerals

    • C. 

      Gasses, solids, and organics

    • D. 

      Liquids, gasses, and solids

  • 11. 
    When any force causes a solid to change permanently, the solid is said to have
    • A. 

      Passed the elastic limit

    • B. 

      Lost the ability to expand

    • C. 

      Failed to meet the elastic limit

    • D. 

      Passed the compression limit

  • 12. 
    The most outstanding characteristic of a liquid is its
    • A. 

      Rigidity

    • B. 

      Usability

    • C. 

      Ability to compress within its container

    • D. 

      Ability to conform to the shape of its container

  • 13. 
    What usually produces flow in a pneudraulic system?
    • A. 

      Relief valves in the lines

    • B. 

      Piston pushing the fluid

    • C. 

      Scupper pushing the fluid

    • D. 

      Selector valve in the lines

  • 14. 
    If 50 psi of cylinder pressure acts on a 5 sq-in piston head, what will the resulting force be?
    • A. 

      150 lbs

    • B. 

      200 lbs

    • C. 

      250 lbs

    • D. 

      300 lbs

  • 15. 
    When an 8 sq-in piston moves 5 inches within a cylinder, what volume of liquid is displaced? (cu-in = cubic inches = in^3)
    • A. 

      4 cu-in

    • B. 

      40 cu-in

    • C. 

      400 cu-in

    • D. 

      4,000 cu-in

  • 16. 
    Turbulence affects fluid-flow in a hydraulic line by
    • A. 

      Increasing velocity and viscosity

    • B. 

      Increasing volume and displacement

    • C. 

      Creating resistance and loss of energy

    • D. 

      Creating resistance and energy increase

  • 17. 
    A tube whose cross-section area is gradually reduced to a smaller size diameter is called a 
    • A. 

      Torus

    • B. 

      Pipette

    • C. 

      Vortex

    • D. 

      Venturi

  • 18. 
    The purposes of a hydraulic reservoir is to
    • A. 

      Store fluid and act as a surge chamber

    • B. 

      Restrict fluid flow in selected directions

    • C. 

      Pressurize and direct fluid to an actuator

    • D. 

      Replenish fluid, allow for thermal expansion, and provide a means of bleeding air from the system

  • 19. 
    The purpose of a standpipe in a reservoir is to
    • A. 

      Protect the pump

    • B. 

      Reserve fluid for the power pump

    • C. 

      Reserve fluid for the emergency pump

    • D. 

      Supply the pump during inverted flight

  • 20. 
    The amount of fluid a pump produces on each cycle or revolution is called its
    • A. 

      Displacement

    • B. 

      Purgement

    • C. 

      Volume

    • D. 

      Rating

  • 21. 
    When referring to hydraulic hand pumps, double action means
    • A. 

      Fluid-flow is created with each stroke of the handle

    • B. 

      Fluid-flow is created with every other stroke of the handle

    • C. 

      Double volume is displaced with each stroke of the handle

    • D. 

      Double volume is displaced with every other stroke of the handle

  • 22. 
    Variable-volume pumps do not require a separate pressure-regulating device in the system because
    • A. 

      They deliver low pressure

    • B. 

      They have an integral compensator

    • C. 

      The case drain relieves high system pressure

    • D. 

      There is no angle between the drift shaft and cylinder block

  • 23. 
    What provides for cooler operation in a Stratopower variable-volume hydraulic pump?
    • A. 

      Foot valves

    • B. 

      Oil radiator

    • C. 

      Creep plates

    • D. 

      Fluid radiator

  • 24. 
    The purpose of a hydraulic motor is to convert hydraulic pressure into
    • A. 

      Rotary mechanical motion

    • B. 

      Kinetic flow motion

    • C. 

      Straight-line motion

    • D. 

      Fluid locomotion

  • 25. 
    How is the piston installed in an accumulator?
    • A. 

      In either direction

    • B. 

      Hollow end toward the air side of the accumulator

    • C. 

      Hollow end toward the fluid side of the accumulator

    • D. 

      Drilled passage toward the air side of the accumulator

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