Electrical

Question 1

What does the GCU do for its starter generator?

Answer 1

PVCROD 
Paralleling
Voltage regulation 
Reverse current protection 
Over voltage protection 
Differential voltage

Question 2

Hot battery bus items

Answer 2

Windows
Avionics clock
Ground Heat(blower)
Battery Relay
Entry lights
Engine Fire extinguishers
Firewall valves

Question 3

GPU requirements

Answer 3

Battery must be on and with a minimum of 20 V

1000 amps for 5 seconds, 500 amps 2 minutes, 300 continuous

Question 4

What size generators do we have?

Answer 4

30 volt (regulated to 28.25 +\~ 0.25 Volt)
250 amp

Question 5

What size battery do we have?

Answer 5

24 volt, 42 amp hour

Question 6

What are battery limits for start?

Answer 6

23 volts normal

20 volts for gpu start

Question 7

What operates on the ground ops switch?

Answer 7

PFD1, Comm 1, audio 1&2, the MKP and pilots side CCP

Question 8

How to tell if No. 3 bus is blown (flaps fail)

Answer 8

Standby battery charging light

Question 9

Generator load limits

Answer 9

100% up to 31,000’
88% above 31,000’
85% on the ground (0-80, N1 61, 80-85 N1 65)

Question 10

GPU limitations

Answer 10

Battery min 20 V
GPU set to 28.0-28.4 V
GPU capable of 1000 amperes 5 sec, 500 amperes for 2 min, and 300 amperes continuous.
Continuous @ 350A may damage external power relay, any over 1000A may over torque drive shaft of Starter-Gen

Question 11

Which bus are flaps on?

Answer 11

Dual fed 3