Electrical

Question 1

When will the DRIVE light and L/R GEN DRIVE EICAS message be displayed

Answer 1

High IDG oil temp

Low IDG oil pressure

Question 2

What is powered on the hot battery bus

Answer 2

Fire extinguisher bottles
Fuel shut off valves
Clocks
RAT manual deploy
Parking break valve

Question 3

Which buses can be powered by the standby power system

Answer 3

Battery bus
Hot battery bus
Standby AC and DC buses

Question 4

What would cause an IDG to disconnect

Answer 4

GEN DRIVE DISC switch pressed

Automatic thermal disconnect due to high oil temp (some a/c)

Question 5

What items shead when the first start selector is moved to the GND position

Answer 5

Both utility buses

Question 6

Once disconnected, the IDG can only be reset how?

Answer 6

on the ground by maintenance personnel.

Question 7

The ground handling bus can only be powered from:

Answer 7

the APU generator or external power, and is not powered in flight.