ELECTRICAL

Question 1

List 3 functions of the GPU?

Answer 1

1) Starter Cut-off
2) Voltage Regulation
3) Field Weakening

Question 2

To charge the battery with a ground power unit (GPU), the battery master switch must be in the BATT position: T/F?

Answer 2

TRUE

Question 3

What is the minimum battery voltage required for a battery start?

Answer 3

24 volts

Question 4

What are the starter-generator start limitations?

Answer 4

1) 3 starts in 30 minutes with 60 seconds rest between
2) A cross-generator start equals 1/3 of a battery start

Question 5

List the items on the emergency busses for the CJ1?

Answer 5

1) Comm 1
2) Nav 1
3) Overhead Flood light
4) Pilot’s & Copilot Audio panel
5) Voltmeter
6) Flap Control
7) RH Pitot Static heater
8) Standby Altimeter
9) Standby Airspeed
10) Standby Gyro
11) Standby HSI
12) Copilot AHRS
13) Fan Speed (N1)
14) Landing Gear Warning & Control

Question 6

What is the maximum amperage limitation for the starter-generators?

Answer 6

300 amp

Question 7

The cross-feed bus allows for logical grouping of items on the right and left main circuit breaker panels: T/F?

Answer 7

TRUE

Question 8

The battery disconnect switch located inside of the cockpit on the captain’s side oxygen panel can be utilize to disconnect the battery from the hot battery bus after shutdown: T/F?

Answer 8

FALSE - (Red switch) is for generally used in emergency situations to isolate the battery from the electrical system to prevent electrical fires or other issues

Question 9

The BATT O’TEMP annunciator light will illuminate at what temperature?

Answer 9

145-160 degrees F (steady light)
160 degrees F (flashing light)

Question 10

At what % N2 will the SG disconnect the start and begin generator?

Answer 10

45%