CBT – ELECTRICAL SYSTEM Flashcards
How many DC power distribution systems are on the aircraft?
A) 4 B) 2 C) 3 D) 5
D) 5
An Integrated drive generators-IDG, consists of a generator and a:
A) TR B) Inverter C) APU D) Constant speed drive
D) Constant speed drive
The AC generators change mechanical energy into:
A) Electrical energy B) Potential energy C) Heat D) Hydraulic energy
A) Electrical energy
What has the highest priority of AC power sources?
A) Engine generators B) APU generator C) External power D) Battery
A) Engine generators
What turns AC power into DC power?
A) Inverters B) Generators C) Transformer Rectifier D) APU generator
C) Transformer Rectifier
When the generator load is over 100%, the indicator turns:
A) Off B) Green C) Amber D) Red
C) Amber
How many AC power sources are available on the aircraft?
A) 4 B) 3 C) 5 D) 6
C) 5
If no other AC power is available, the static inverter converts DC power to AC, from:
A) The APU B) Battery 1 C) Battery 2 D) Battery 3
B) Battery 1
The DC battery bus indication changes to amber if the DC voltage is equal to or less than how many volts?
A) 25 B) 28 C) 150 D) 400
A) 25
If all AC power is lost, the DC power from the batteries is changed to AC power by the:
A) Inverters B) Generators C) Transformer Rectifier D) APU generator
A) Inverters
During flight, with the switch in Auto, if only one generator is operating the entire electrical network, which of the following is not automatically shed?
A) The main galley B) The inflight entertainment system C) In-seat power supply D) Hot battery bus
D) Hot battery bus
If you push the IDG switch, you can cause damage if it held more than:
A) 1 minute B) 5 seconds C) 3 seconds D) 20 seconds
C) 3 seconds
The DC system is usually rated at how many volts?
A) 115 B) 3 C) 400 D) 28
D) 28
How many AC power buses are on the aircraft?
A) 4 B) 5 C) 3 D) 2
C) 3
The battery bus directly connected to each battery is referred to as the:
A) Battery 1 bus B) Hot battery bus C) Essential battery bus D) Battery 2 bus
B) Hot battery bus
