Cj3 Electrical System

Question 1

A good battery should supply power to the hot battery bus and the emergency bus for approximately?

Answer 1

30 minutes
10 minutes in batt

Question 2

The cross feed bus serves as?

Answer 2

An extension bus 

Question 3

In-flight with the generators online the battery is isolated from any charging source when the batt switch is in?

Answer 3

Off or EMER

Question 4

If manual termination of a start sequence is desired the switch to press is?

Answer 4

START DISG

Question 5

The voltage read on the voltmeter with the voltage SEL switch in BATT is sensed from the? 

Answer 5

Hot battery bus 

Question 6

If the generators are not operating, the meter reads battery voltage when the battery switch is in? 

Answer 6

BATT\EMER 

Question 7

The light and each engine start button illuminates to indicate?

Answer 7

Closing of the start relay

Question 8

The generator field relay opens when?

Answer 8

A. and internal feeder fault is sensed.
B. and overvoltage condition is sensed
C. An ENG FIRE switch light is activated. 

Question 9

If a battery start is intended, the generator switches should be placed to? 

Answer 9

GEN

Question 10

With the battery as the only source of power and the battery switch off, the bus’es powered is/ R?

Answer 10

Hot battery bus

Question 11

With the battery as the only source of power and the batt switch in Emer, the following bus bus(es) are powered

Answer 11

Emergency bus and hot battery bus

Question 12

What is powered by the emergency bus?

Answer 12

• comm 1
  -stby pitot heat
  -nav1
  -copilots pitot heat
  -rtu 1
  -copilots ADC air data computer
  -RIU L-R
  -flap control
  -pilots and copilots audio panels
  -landing gear control
  -stby HSI(copilots AHRS)
  -landing gear monitor
  -stby engine N1 indicators
  -overhead floodlights
  -stby flight display
• voltmeter (internal battery)

Question 13

What is the function of the GCU?

Answer 13

Regulate, parallel, and protect