2A651 Edition2 Volume 4

79 Questions | Total Attempts: 152

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2A651 Edition2 Volume 4

Questions and Answers
  • 1. 
    (601) Which 54H60–117 propeller subassembly transmits engine torque to the propeller blades?
    • A. 

      Barrel.

    • B. 

      Control.

    • C. 

      Low pitch stop.

    • D. 

      Pitchlock regulator.

  • 2. 
    (601) Which 54H60–117 propeller subassembly carries high centrifugal loads created by the propeller blades?
    • A. 

      Dome.

    • B. 

      Barrel.

    • C. 

      Control.

    • D. 

      Front spinner.

  • 3. 
    (601) On the 54H60–117 propeller, which component delivers the actual propeller blade angle from the blade to the control assembly?
    • A. 

      Microadjusting ring.

    • B. 

      Beta feedback shaft

    • C. 

      Blade segment gear

    • D. 

      Blade bushing.

  • 4. 
    (601) On the 54H60–117 propeller, which pitchlock component mechanically holds the stationary and rotating pitchlock ratchets apart during reversing and unfeathering operations?
    • A. 

      Pitchlock control cam.

    • B. 

      Pitchlock ratchet piston

    • C. 

      Externally threaded ring.

    • D. 

      Externally splined spacer ring.

  • 5. 
    (601) On the 54H60–117 propeller, what component is installed on the blade before the blade butt is formed during manufacture?
    • A. 

      Slip rings.

    • B. 

      Microadjusting ring.

    • C. 

      Roller thrust bearing.

    • D. 

      Beveled thrust washer.

  • 6. 
    (601) On the 54H60–117 propeller, which dome assembly part allows the rotating cam to turn while the stationary cam remains in a fixed position?
    • A. 

      Roller shaft.

    • B. 

      Track slopes.

    • C. 

      Ball bearings.

    • D. 

      Roller bearings.

  • 7. 
    (601) On the 54H60–117 propeller, which dome assembly component limits cam travel and prevents the propeller from exceeding feather and reverse blade angles?
    • A. 

      Rotating pitchlock ratchet.

    • B. 

      Low pitch stop.

    • C. 

      Stationary cam.

    • D. 

      Stop ring.

  • 8. 
    (601) On the 54H60–117 propeller, what function is a task of the low pitch stop assembly?
    • A. 

      Prevents the propeller from going into the beta range when the throttle is positioned in the alpha range.

    • B. 

      Limits cam travel and prevents the propeller from exceeding feather and reverse blade angles.

    • C. 

      Prevents the blades from decreasing pitch if an overspeed condition occurs

    • D. 

      Transmits engine torque to the blades.

  • 9. 
    (601) On the 54H60–117 propeller, which component’s purpose is to provide electrical circuits between the brush block assembly and the deicing elements of the blade assemblies?
    • A. 

      Control assembly.

    • B. 

      Front spinner section.

    • C. 

      Hub mounting bulkhead.

    • D. 

      Deicer contact ring holder

  • 10. 
    (602) On the 54H60–117 propeller, during normal propeller operation, the output of which pumps is used?
    • A. 

      Main pressure and main scavenge

    • B. 

      Standby pressure and main scavenge.

    • C. 

      Auxiliary pressure and main pressure.

    • D. 

      Auxiliary pressure and auxiliary scavenge.

  • 11. 
    (602) On the 54H60–117 propeller, which pump(s) is/are used during propeller static operation?
    • A. 

      Main pressure.

    • B. 

      Main scavenge.

    • C. 

      Standby pressure and main scavenge.

    • D. 

      Auxiliary pressure and auxiliary scavenge.

  • 12. 
    (602) On the 54H60–117 propeller, which cam disarms the NTS system linkage when the throttle is positioned in the beta range?
    • A. 

      Manual feather

    • B. 

      Beta follow-up.

    • C. 

      Speed set.

    • D. 

      Beta set.

  • 13. 
    (602) On the 54H60–117 propeller, which cam schedules a desired blade angle in the beta range?
    • A. 

      Beta set.

    • B. 

      Beta follow-up.

    • C. 

      Beta shaft rigging.

    • D. 

      Alpha shaft rigging.

  • 14. 
    (602) On the 54H60–117 propeller, which valve connects the main, standby, and auxiliary pressure pumps’ output to the increase pitch lines during negative torque conditions?
    • A. 

      High pressure relief.

    • B. 

      Feather actuating.

    • C. 

      Feather.

    • D. 

      Pilot.

  • 15. 
    (602) On the 54H60–117 propeller, which valve assists the feather solenoid valve with hydraulic positioning of the feather and pilot valves?
    • A. 

      High pressure relief.

    • B. 

      Feather actuating.

    • C. 

      Standby.

    • D. 

      Backup.

  • 16. 
    (602) On the 54H60–117 propeller, what switch, located in the valve housing, is opened by a cam from 81 to 85 propeller blade angle?
    • A. 

      Beta indicator.

    • B. 

      Pressure cutout.

    • C. 

      NTS.

    • D. 

      PCBS.

  • 17. 
    (602) The 54H60–117 propeller governor speeder spring tension positions the pilot valve to maintain what percent rpm in the beta range?
    • A. 

      104 to 108%.

    • B. 

      114 to 118%.

    • C. 

      99 to 103%.

    • D. 

      109 to 113%.

  • 18. 
    (603) On the 54H60–117 propeller, if the main filter becomes clogged, which valve opens to assure continued flow?
    • A. 

      Check

    • B. 

      Bypass.

    • C. 

      Low pressure relief.

    • D. 

      High pressure relief.

  • 19. 
    (603) On the 54H60–117 propeller, when the backup valve is opened, the hydraulic pressure routed to the governor pilot valve is used for which operation?
    • A. 

      Pitchlock.

    • B. 

      Standby.

    • C. 

      Reverse.

    • D. 

      Airstart.

  • 20. 
    (603) On the 54H60–117 propeller, which pressure pump is used to feather or unfeather the propeller during static propeller operation?
    • A. 

      Main.

    • B. 

      Backup.

    • C. 

      Standby.

    • D. 

      Auxiliary.

  • 21. 
    (603) On the 54H60–117 propeller, which type of valve opens to allow the output of the standby pump to combine with the output of the main pump?
    • A. 

      Check.

    • B. 

      Bypass.

    • C. 

      Low pressure relief.

    • D. 

      High pressure relief.

  • 22. 
    (603) On the 54H60–117 propeller, when standby pump output is not required, where is it routed?
    • A. 

      Atmospheric sump.

    • B. 

      Pressurized sump.

    • C. 

      Dome assembly.

    • D. 

      Pilot valve.

  • 23. 
    (604) What type of force used during pitchlock of the 54H60–117 propeller prevents the blades from decreasing pitch?
    • A. 

      Spiral bending.

    • B. 

      Thrust bending.

    • C. 

      Centrifugal twisting moment.

    • D. 

      Aerodynamic twisting moment.

  • 24. 
    (604) The purpose of the 54H60–117 propeller pitchlock assembly is to prevent
    • A. 

      Loss of oil pressure.

    • B. 

      Flow of hydraulic fluid to the pilot valve.

    • C. 

      An engine overspeed due to a loss of power.

    • D. 

      Engine overspeed due to a loss of hydraulic pressure.

  • 25. 
    (604) What prevents engagement of the stationary and rotating ratchets on the 54H60–117 propeller when blade angles are below 25° and above 55°?
    • A. 

      Loss of hydraulic pressure.

    • B. 

      The pitchlock control cam.

    • C. 

      An overspeed in excess of 103.5%.

    • D. 

      Increase- or decrease pitch pressure

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