問題一覧
1
If the Prinary External source is powering the Right main Bus, and the Secondary External Power source is powering the Left main Bus what occurs if the APU is started :
A. The APU generator replaces Secondary External Power on the left main Bus
2
When Electric Generator off Light (left or Right) illuminated (amber) :
D. Both A and B are correct
3
The Transformer rectifier units (TRUs) are powered by:
B. The AC transfer busses
4
The Generator drive :
C. Both A and B are correct
5
There are no controls for the DC system, as it is fully automatic
B. FALSE
6
The primary source of DC power is:
B. Four transformer rectifier units (TRUs)
7
The Transformer rectifier units (TRUs) suply:
D. All of the above
8
If the Ram Air Turbine (RAT) is unable to maintain RPM the RAT electrical loads are shed
A. TRUE
9
The ground service bus powers:
C. The main battery charger and cargo handling
10
During Climb the EICAS advisory message, ELEC GEN DRIVE L displays:
D. Both a and B are correct
11
The main DC electrical system uses four transformer rectifier units (TRUs) to produce DC power
B. FALSE
12
The ground handling bus can be powered on the ground only by the APU
B. FALSE
13
The Ram Air Turbine (RAT) is deployed automatically if:
D. Both A and B are correct
14
The STBY electrical system can supply:
D. AC and DC power to selected flight instruments, communication and navigation systems
15
With both primary and secondary external power sources connected, the right engine is started and the right IDG breaker closed:
C. The left and the right main busses are powered by the right IDG and both external power sources disconect from the main busses and become available
16
The entire airplane AC electrical load can be supplied by:
D. All of the above
17
With the right engine running APU is started and both external power sources connected:
B. The right main bus is powered by the right IDG and the left main bus is powered by the APU
18
The Ram Air Turbine (RAT)
B. Can supply electrical and hydrolic power simultaneously and has no operating limits
19
If the Primary External source is powering both left and right main busses and the APU generator is connected:
B. The APU powers the left main bus and the primary external source powers the right main bus
20
If the Ram Air Turbine (RAT) is unable to maintain RPM Power for the STBY power system:
A. is provided by the main battery
21
The ground service bus is normally powered by :
D. All of the above
22
The ground handling bus can be powered:
B. On the ground by theAPU and primary external power source
23
The STBY electrical system consists of:
C. The main battery, STBY inverter,TRUs, RAT
24
If the Electrical load exceeds the power available, the Electrical Load Management System (ELMS) :
C. Load sheds Galleys first, then utility busses
25
The backup electrical system automatically powers one or both transfer busses when:
D. All of the above