2a352h Volume 3 Ure

100 Questions | Total Attempts: 165

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2a352h Volume 3 Ure - Quiz

2a352h volume 3 ure


Questions and Answers
  • 1. 
    The constant speed drive (CSD) that is used to drive a 60/80 kilovolt-ampere (KVA) generator has an output of approximately
    • A. 

      4,000 RPM.

    • B. 

      6,000 RPM.

    • C. 

      8,000 RPM.

    • D. 

      10,000 RPM.

  • 2. 
    In an alternating current (ac) power supply system, the component that controls load division during parallel generator operation is the
    • A. 

      Load controller

    • B. 

      Under speed switch

    • C. 

      Constant speed drive

    • D. 

      Generator control unit

  • 3. 
    The under voltage trip point for the main generator in an alternating current (ac) power supply system is
    • A. 

      93 [±3] VAC.

    • B. 

      103 [±3] VAC

    • C. 

      115 [±2] VAC

    • D. 

      125 [±2] VAC

  • 4. 
    What circuit in the generator control unit (GCU) in an alternating current (ac) power supply system isolates shorted or open generator phase leads?
    • A. 

      Reactive biasing

    • B. 

      Voltage regulator

    • C. 

      Neutral current-sensing

    • D. 

      Unbalanced current-sensing

  • 5. 
    In an alternating current (ac) power supply system, what component connects the 115/200 volts alternating current (vac) main generator output to the main power buses?
    • A. 

      Bus tie lockout (BTL).

    • B. 

      Bus tie contactor (BTC).

    • C. 

      Generator control unit (GCU).

    • D. 

      Generator line contactor (GLC).

  • 6. 
    Before troubleshooting any system, be sure to read all
    • A. 

      Cautions, notes, and disclosures

    • B. 

      Procedures, warnings, and citations.

    • C. 

      Warnings, cautions, and citations

    • D. 

      Warnings, cautions, and notes

  • 7. 
    Which is not a step to follow when using the manual troubleshooting method?
    • A. 

      Take meter readings

    • B. 

      Limit the malfunction

    • C. 

      Define the discrepancy

    • D. 

      Swap the most probable cause.

  • 8. 
    In the direct current (dc) power supply system, the delta-wound secondaries of the internal transformer in the transformer rectifier (TR) unit are used to provide a more stable
    • A. 

      Current input

    • B. 

      Voltage input

    • C. 

      Current output.

    • D. 

      Voltage output.

  • 9. 
    During normal operation, the reverse current relays (RCR) in a direct current (dc) power supply system are energized by the
    • A. 

      Battery

    • B. 

      TR units

    • C. 

      Battery bus

    • D. 

      Emergency DC bus.

  • 10. 
    In the direct current (dc) power supply system, once all of the internal relays deenergize, the transformer rectifier (TR) units are disconnected from the buses
    • A. 

      With the higher potential to them.

    • B. 

      With the lower potential to them.

    • C. 

      With an equal potential to them.

    • D. 

      When power is removed

  • 11. 
    What is the minimum voltage required to energize the voltage relay inside a reverse current relays (RCR)?
    • A. 

      21 vdc

    • B. 

      22 vdc

    • C. 

      26 vdc

    • D. 

      28 vdc

  • 12. 
    When troubleshooting a direct current (dc) power problem, what step should be performed after you consult the aircraft forms and applicable technical data?
    • A. 

      Replace the part called for first in the FI.

    • B. 

      Perform an operational checkout

    • C. 

      Ask the expeditor for more help.

    • D. 

      Ask for an engine run

  • 13. 
    What should you do before taking any ohmmeter readings of a circuit?
    • A. 

      Apply power to the circuit

    • B. 

      Remove the circuit from power

    • C. 

      Connect all connectors in the system

    • D. 

      Verify the meter is set to the diode setting

  • 14. 
    Power from the F–22 alternating current (ac) inverters is distributed to
    • A. 

      PDCs 1 and 2.

    • B. 

      PDCs 3 and 4.

    • C. 

      PDCs 5 and 6

    • D. 

      PDCs 7 and 8.

  • 15. 
    When more than one source of power is available to the F–22, what priority is the auxiliary generator?
    • A. 

      First priority.

    • B. 

      Second priority.

    • C. 

      Third priority.

    • D. 

      Fourth priority.

  • 16. 
    How long does the F–22 auxiliary power unit (APU) switch need to be held to initiate APU operation?
    • A. 

      1 to 2 seconds

    • B. 

      2 to 3 seconds.

    • C. 

      3 to 4 seconds

    • D. 

      Less than 1 second

  • 17. 
    Which condition will cause the F–22 battery (BATT) LOW light to flash?
    • A. 

      Battery is dead.

    • B. 

      Battery power is available

    • C. 

      Battery temperature is below –4°.

    • D. 

      Power is available for only 1 APU start

  • 18. 
    To clear a flashing condition, battery heating may require up to
    • A. 

      10 minutes

    • B. 

      25 minutes

    • C. 

      35 minutes

    • D. 

      60 minutes

  • 19. 
    The 270 volts direct current (vdc) power for the F–22 ac inverters is received from 
    • A. 

      GDC 1 and 2

    • B. 

      PDC 1 and 2

    • C. 

      GDC 3 and 4

    • D. 

      PDC 3 and 4

  • 20. 
    Which is a source of electrical power for the F–22 converter/regulators when permanent magnet generator (PMG) power is lost?
    • A. 

      Auxiliary generator

    • B. 

      Emergency generator

    • C. 

      External dc power

    • D. 

      Stored energy system

  • 21. 
    The fourth section of the F–22 permanent magnet generators (PMG) is used to power the 
    • A. 

      Main generator GCU

    • B. 

      Stored energy system

    • C. 

      Auxiliary GCU

    • D. 

      Standby GCU

  • 22. 
    The F–22 aircraft battery is located behind
    • A. 

      Panel 4121

    • B. 

      Door 4135

    • C. 

      Panel 4151.

    • D. 

      Door 4234

  • 23. 
    What light indicates external electrical power is available to the F–22 aircraft?
    • A. 

      AVAIL

    • B. 

      EXT PWR

    • C. 

      PWR AVAIL

    • D. 

      PWR ON

  • 24. 
    The F–22 dc contactor K703 provides 270 volts direct current (vdc) from the external power receptacle to 
    • A. 

      GDC 1

    • B. 

      GDC 2

    • C. 

      GDC 3

    • D. 

      GDC 4

  • 25. 
    Which component is not part of the F–22 emergency power generation system?
    • A. 

      Auxiliary GCU

    • B. 

      Auxiliary generator

    • C. 

      DC contactor K704

    • D. 

      Standby PMG

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