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Endeavor Air CRJ 900 Systems Final Exam Study Guide Questions and Answers 100% Solved
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Endeavor Air CRJ 900 Systems Final Exam Study Guide Questions and Answers 100% Solved
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Endeavor Air CRJ 900 Systems FinalExam Study Guide Questions and
Answers 100% Solved
What does the constant speed drive do? - ✔✔Uses an internal oil system to change engines variable
speed into the constant RPM required for generator output.
, How is the CSD cooled? - ✔✔Hi bypass air
What does the generator control unit (GSU) do? - ✔✔Provide AC voltage regulation and fault protection
for the AC electrical system.
When will the GSU execute generator protective shutdowns? - ✔✔Over/under voltage or frequency Gen
or bus over-current
What causes an IDG 1(2) FAULT/DISC? - ✔✔HOT/LOP
High oil temperature
Low oil pressure
When must an IDG be manually disconnected? - ✔✔High internal temp
Over-torque
Can an IDG be reconnected after disconnect? - ✔✔Only on the ground by a mechanic.
Can the APU GEN be disconnected from the APU gear box? - ✔✔No
Which hydraulic pump runs continuously when the ADG deploys? - ✔✔3B
What does the ADG power? - ✔✔AC ESS bus which powers DC ESS bus through the ESS TRU
When does the ADG deploy? - ✔✔Loss of all AC power
What does the PWR TXFR OVERRIDE switch do? - ✔✔Returns the AC ESS and hydraulic pump 3B to
normal system logic once AC power re established.
What does an AVAIL light mean? - ✔✔Correct phase, voltage, frequency
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