2A651 Volume 4

18 Questions | Attempts: 265
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  • 1/18 Questions

    Which 54H60-91 propeller subassembly transmits engine torque to the propeller baldes?

    • Barrel
    • Control
    • Low pitch stop
    • Pitchlock regulator
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  • 2. 

    The purpose of the 54H60-91 pitchlock assembly is to prevent?

    • The loss of oil pressure

    • An engine overspeed due to a loss of power

    • The flow of hydraulic fluid to the pilot valve

    • An engine overspeed due to a loss of hydraulic pressure

    Correct Answer
    A. An engine overspeed due to a loss of hydraulic pressure
  • 3. 

    On the 54H60-91 propeller, which component delivers the actual propeller blade angle from the blade to the control assembly?

    • Microadjusting ring

    • Beta feedback shaft

    • Blade segment gear

    • Blade bushing

    Correct Answer
    A. Beta feedback shaft
  • 4. 

    On the 54h60-91 propeller which component provides a means for balancing the propeller?

    • Deicer contact ring holder

    • Hub mounting bulkhead

    • Front spinner

    • Afterbody

    Correct Answer
    A. Hub mounting bulkhead
  • 5. 

    On the 54H60-91 propeller which pitchlock component mechanically holds the stationary and rotationg pitchlock ratchets apart during reversing and unfeathering operations?

    • Pitchlock control cam

    • Pitchlock ratchet piston

    • Externally threaded ring

    • Externally splined spacer ring

    Correct Answer
    A. Pitchlock control cam
  • 6. 

    On the 54h60-91 propeller what function is a task of the low pitch stop assembly?

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

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

    • Prevents the blades from decreasing pitch if an overspeed condition occurs

    • Transmits engine torque to the blades

    Correct Answer
    A. Prevents the propeller from going into the beta range when the throttle is positioned in the alpha range
  • 7. 

    On the 54h60-91 propeller which valve contained in the valve housing controls the flow of hydraulic fluid to and from the dome assembly?

    • Standby

    • Feather

    • Backup

    • Pilot

    Correct Answer
    A. Pilot
  • 8. 

    The 54h60-91 propeller governor speeder ring tension positions the pilot valve to maintain what percent rpm in the beta range?

    • 99-103%

    • 104-108%

    • 109-113%

    • 114-118%

    Correct Answer
    A. 109-113%
  • 9. 

    The condition lever GND STOP position is only effective on the ground because the circuits made in this position are completed through what switches?

    • Landing gear touchdown

    • Low speed ground idle

    • Landing gear warning

    • Air start

    Correct Answer
    A. Landing gear touchdown
  • 10. 

    What component in the T56 engine coordinator provides refrence signals to the electronic TD amplifier that are proportional to the desired TIT?

    • Feather shaft

    • Potentiometer

    • 65 degree microswitch

    • 66 degree microswitch

    Correct Answer
    A. Potentiometer
  • 11. 

    On the 54h60-91 propeller which component is used in place of a shim plate on the No. 1 blade?

    • Beveled thrust washer

    • Stationary ratchet

    • Beta segment gear

    • Blade barrel shim

    Correct Answer
    A. Beta segment gear
  • 12. 

    On the 54h60-91 propeller what prevents engagement of the stationary and rotating ratchets at blad eangles below 25 degrees and above 55 degrees?

    • An overspeed of 103.5%

    • The pitchlock control cam

    • A loss of hydraulic pressure

    • Increase or decrease pitch pressure

    Correct Answer
    A. The pitchlock control cam
  • 13. 

    On the 54h60-91 propeller what is the function of the differential gear train assembly?

    • Drives the main and standby pressure pumps

    • Controls operation of the pilot valve and serves as an electrical ground

    • Drives the rotating sleeve when the throttle is positioned in the beta range

    • Transmits blade angle movement to the valve housing and drives the propeller governor flyweights

    Correct Answer
    A. Transmits blade angle movement to the valve housing and drives the propeller governor flyweights
  • 14. 

    On the 54h60-91 propeller when throttle is moved to the GROUND IDLE position what degree setting does the coordinator pointer indicate on the protracter?

    • 0

    • 18

    • 34

    • 90

    Correct Answer
    A. 18
  • 15. 

    On the 54h60-91 propeller hydraulic fluid is directed from the pump housing to the barrel assembly through what component?

    • Valv housing

    • Low pitch stop

    • Transfer bearing

    • Pitchlock regulator

    Correct Answer
    A. Transfer bearing
  • 16. 

    On the 54h60-91 propeller which pump assists the main pressure pump when large blade angle movements are required?

    • Main scavenge

    • Standby pressure

    • Auxiliary pressure

    • Auxiliary scavenge

    Correct Answer
    A. Standby pressure
  • 17. 

    What switch located in the control quadrant activates the 54H -60-91 propeller governor speed bias servo assembly as the throttle is moved into the flight idle gate?

    • Beta indicator

    • Landing gear warning

    • Low speed ground idle

    • Synchrophaser disarming

    Correct Answer
    A. Synchrophaser disarming
  • 18. 

    On the 54h60-91 propeller which cam disarms the NTS system linkage when the throttle is positioned in the beta range?

    • Manual feather

    • Beta follow up

    • Speed set

    • Beta set

    Correct Answer
    A. Manual feather

Quiz Review Timeline (Updated): Mar 21, 2022 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 23, 2010
    Quiz Created by
    Kbowden
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