Electrical

Question 1

How many Batteries are required to power the ships electrical system?
(Minimum voltage?)

Answer 1

Just one Battery with a minimum of 16v to energize online

Question 2

Which power source takes precedence

(Main Batteries/APU/GPU)??

Answer 2

GPU is Master with other power sources running (No Amps) (28V)

Question 3

What is the GPU over volt cut out?

Volts/amps?

Answer 3

GPU will cut out or not come online with any of these conditions present.
>33V
<500amps
>1500amps

Question 4

What does the GCU prevent from coming online until you disconnect the GPU?

Answer 4

The Ships Generators

Question 5

What value does the APU share the load with the ships Generators?

Answer 5

1/3 of the total load between Left/Right Generator and APU

Question 6

At what N2 Value will the GCU open the starter relay??

Answer 6

@40% N2, starter relay opens and light extinguishes

Question 7

ELEC PWR annunciator light comes on
What QRH page?
(VAC, VDC, AMP Limits?)

Answer 7

Amber Tab 5
VAC range (110-130)
VDC range (22V-29.5V)
AMPs (0-325)(within 40 Amps/L,R)

Question 8

EMER BAT 1 or 2 annunciation light comes on, what happened?

Answer 8

Either or both batteries are not receiving trickle charge.

Question 9

What does EMER BAT 1 power?

Answer 9

Both N1’s
Mag compass
3 Stand by instruments

Question 10

What does EMER BAT 2 power?

Answer 10

Gear indicator lights
ADC 1&2/AHRS 1&2 (For initial bit checks)/(For 11min after full electrical failure)

Certain tails (RTUI/COM1/NAV1/CDUI)

Question 11

What hot items are on BATT 1

Answer 11

Tail-cone inspection mx light

Toilet service recepticle

Question 12

What hot items are on BAT 2

Answer 12

Cabin Entry light
Cockpit dome light
Aft cabin bag light
Tail cone bag light
SPPR system

Question 13

How do you know if you lost DC1 Bus?

Answer 13

N2 and ITT on left or right

Question 14

How do you know if you lost DC2 bus?

Answer 14

Loss of fuel flow gauge left or right

Question 15

How do you know if you lost DC3 bus?

Answer 15

Oil gauges will drop to zero left or right

Question 16

If one of your DC buses fails, can you reset the circuit breaker or would you bus tie?

Answer 16

Neither, leave it alone, go land and defer to MX

Question 17

Where are the inverters and current limiters located?

Answer 17

In Tail-cone baggage compartment

Question 18

How long will you have power provided BATT&EMER batteries are fully charged?

Answer 18

Approximately 1 hour

Question 19

What indication would there be if you lost a current limiter? What about both?

Answer 19

AMP load will be lower than other side

If both, Amps will be low and VDC will show 24V.

Question 20

What items are located on the Left AC BUS

Answer 20

L Windshield Defog
Mach Trim
GPWS

Question 21

What items are on the R AC Bus?

Answer 21

R Windshield Defog
Spoilerons
Nose steering
Nose Fan (ground)

Question 22

What would you do if one of your Inverters failed

Answer 22

Turn off failed Inverter
AC Bus tie
Other side will automatically give Windshield defog

Question 23

Which items automatically load shed when losing an engine or generator??
(3 hot, 1 cold)

Answer 23

Cabin Power
Cockpit floor heat
Baggage heat
Freon Air conditioner system

Question 24

What bus does the cabin power come from?

Answer 24

Directly from Battery charging Bus

Question 25

What items are on the EMER BUS relays?

4 P’s

Answer 25

STBY (P)itot heat
Aux Hydraulic (p)ump
Primary (p)itch trim (secondary trim always available)
E(P)M

Question 26

You notice one generator is over volting so you shut that side off, can you reset that generator after completing a checklist?

Answer 26

NO, do not reset.