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Details

PSA CRJ 200
Electrics
28
Aviation
Professional
02/25/2015

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Cards

Term
What are the ratings of the CRJ's two batteries?
Definition
APU battery is a 24v, 43amp nickle nicad battery, and the main battery is a 24v, 17 amp Nickle NiCad
Term
What does the green DC AVAIL light mean?
Definition
External DC is plugged in and is the correct voltage and polarity
Term
What does the green AC AVAIL light mean?
Definition
External AC is plugged in and is the correct frequency, phase and voltage
Term
What are the sources of 115v AC power?
Definition
2 IDG's (integrated drive generators) APU generator, Air driven generator, And AC ground power
Term
When can the pilot reset a circuit breaker in flight?
Definition
Under the direction of a QRH procedure or when in the judgement of the PIC it is necessary for the safe completion of the flight.
Term
What two components compromise the IDG?
Definition
CSD (constant speed drive) and a generator
Term
How does the CSD work?
Definition
It utilizes an internal oil system to hydr-mechanically to change variable input speed from the engine accessory gearbox to a constant speed output for the generator of 12,000 RPM.
Term
What provides electrical power if there is a complete loss of AC in flight?
Definition
ADG, The air driven generator provides 15 KVA AC power
Term
What is the KVA rating of the IDG's?
Definition
30 KVA up to 35,000 feet, 25 KVA up to 41,000 feet
Term
What two conditions will cause the IDG to automatically disconnect?
Definition
Over torque (aproximately 3300 lbs ) and, Over-temp ( 168 degrees C case temperature )
Term
If you manually disconnect an IDG, can you get it back in flight?
Definition
NO, it can only be reset on the ground
Term
What is the KVA rating of the APU generator?
Definition
30 KVA to 37,000 feet
Term
What is the AC bus priority?
Definition
Onside, APU, Cross side, and external power
Term
How many TRU's does AC bus 2 power?
Definition
Three U TRU 2, ESS TRU 2, and SERV TRU through the AC SERV bus
Term
AC ESS bus in normally powered how?
Definition
By AC bus 1, however it can be manually or automatically transfered to AC bus 2
Term
What would the indication be if AC ESS was being powered by AC bus 2?
Definition
The The AC ESS XFER ALTN light will come on
Term
What is the power priority of the AC ESS bus?
Definition
AC bus 1, AC bus 2, ADG bus
Term
What will the indication be if the ADG has deployed?
Definition
EMER POWER ONLY EICAS message
Term
What are the conditions to auto deploy the AGD?
Definition
All AC power is lost, Last AC power source was internal, weight off wheels, and parking brake off
Term
What does the DC SERV switch do?
Definition
Connects the DC SERV bus to the APU BATT DIR bus
Term
What is on the DC EMER bus?
Definition
Engine and APU fire extinguishers, and fuel and hyd. shut off valves
Term
What bus ties are manual vs automatic?
Definition
Ties 1 and 2 are automatic or manual, ESS tie is manual only
Term
What does the ADG power?
Definition
AC ESS bus, and HYD 3B
Term
Why is it essential to pull the AGD handle, even if it has automatically deployed?
Definition
Pulling the handle “locks the aircraft in a weight off wheels “condition preventing the loss of DC ESS on landing.
Term
How long can the batteries provide backup power if all electrical is lost?
Definition
Approximately 30 minutes
Term
What are the electrical ratings of the TRU's?
Definition
28v, 100 amp
Term
How would you isolate an AC bus?
Definition
By pressing the onside AUTO XFER INHIBIT switch light and then turning off the affected generator
Term
Why is it essential to pull the AGD handle, even if it has automatically deployed?
Definition
Pulling the handle “locks the aircraft in a weight off wheels “condition preventing the loss of DC ESS on landing.
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