Elelctical 2 Flashcards
0
Q
Location of the APU Battery
A
Aft equipment bay
1
Q
Location of the Main Battery
A
Nose compartment
2
Q
How many TRU’s are installed in the CRJ900?
A
4
3
Q
Where are the are the TRU’s located?
A
Nose compartment
4
Q
How many generators are installed?
A
Four
2 engine generators
1 APU generator
1 ADG
5
Q
What is the function of the 4 TRU’s
A
To convert 115v AC to 28V DC
6
Q
How are the TRU’s cooled?
A
Individual Fans
7
Q
If the main buses are powered, are the essential busses automatically powered?
A
Yes
8
Q
Is there an on/off switch for the TRU’s?
A
No
They are automatically powered when the AC buses are powered
9
Q
What controls the DC tie contactors?
A
The DC power centers (DCPC) automatically control DC toe operation
10
Q
What lights will illuminate when the master switch is turned on?
A
AC ESS TXFR L Boost Pump INOP R Boost Pump INOP Press Cont Fault L Pack OFF R Pack OFF Mach Trim
