ELECTRICAL Flashcards

1
Q

How many generators?

A

4 including APU

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2
Q

How many PMA?

A

5

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3
Q

How many Batteries?

A

2

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4
Q

Where is the ground power receptacle located?

A

Right rear of aircraft

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5
Q

Does RAT provide both electric and hydraulic power?

A

Yes

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6
Q

Does APU have its own battery?

A

No

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7
Q

APU uses which battery to start?

A

BAT 1

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8
Q

How many main busses?

A

2

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9
Q

How many essential busses?

A

2

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10
Q

How many Battery buses?

A
  1. One for each battery
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11
Q

How many INIT buses?

A

2

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12
Q

Whats the function of the INIT buses?

A

Just for minimum loads. 2 screens and a CCD

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13
Q

APU controller is on which BAT?

A

Bat 2

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14
Q

How many Master Avionics buses?

A

2

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15
Q

How many cabin bus?

A

1

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16
Q

How many galley bus?

A

1

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17
Q

RAT is connected to which bus?

A

Right Essential Bus

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18
Q

When does the RAT automatically deploy?

A

Loss of all 3 generators or triple engine failure

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19
Q

Which busses charge the batteries?

A

Left Essential - BAT 1

Right Essential - BAT 2

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20
Q

Can the RAT charge the batteries?

A

Yes. Thru the essential busses

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21
Q

Can the APU and External power work together?

A

No. GPU has priority

22
Q

Will the GPU stay online if you start and engine with it?

A

No. It kicks offline after the first engine start

23
Q

What does the PMA power?

A

All 3 FADECS. PMA 4 and 5 power the number 1 and 2 flyby-wire system. PMA 4 and 5 are just extensions to PMA 1 and 2 on engines 1 and 2.

24
Q

Normal generator voltage?

A

28.5

25
Q

Max generator voltage?

A

32 volts

26
Q

Max speed with RAT?

A

260 kt or M8.0

27
Q

Min speed for RAT?

A

110kts - 130 kts

28
Q

Is there a safety pin for the RAT?

A

Yes

29
Q

Is the aircraft electrical system AC or DC?

A

28 Volt DC system

30
Q

How many amps on the generators normally?

A

400 Amps

31
Q

What is normal battery voltage?

A

24 Volt

32
Q

Can the RAT charge the batteries?

A

Yes

33
Q

Does the GPU charge the batteries?

A

Yes. The essential busses will be powered with the GPU

34
Q

If you are just on battery power in the air, how long would the batteries last?

A

7 minutes

35
Q

What is the minimum battery voltage required for them to connect to the busses?

A

18 V

36
Q

What powers the ground service bus?

A

Battery busses

37
Q

At ambient temperatures below 0°C do not operate the Ground Service Bus (Battery Load). True or False?

A

True

38
Q

Ground Service Bus operation is limited to 3 minutes by a circuit timer. True or False?

A

True

39
Q

Does the battery switches need to be on to power the battery busses?

A

No. The battery busses are also hot battery busses. They are tied directly to the batteries.

40
Q

Do we have generator busses?

A

No

41
Q

The generators power which busses?

A

Main busses

42
Q

Generator 3 powers which main bus?

A

Right Main

43
Q

Left Main bus is powered from which generators?

A

Gen 1 & 2

44
Q

When will the external power button flash?

A

External power is connected and at least one engine generator is connected.

45
Q

Is our GPU AC or DC?

A

DC

46
Q

On the ground, the auto load-shed system is disabled. True or False?

A

True

47
Q

Where is the GPU connection port located on the airplane?

A

Right aft side of the airplane

48
Q

Will the ground service bus connect to the batteries if the battery switches are turned on?

A

No

49
Q

Which switch must be turned on to be able to connect the ground service bus?

A

GND SERVICING switch located on the maintenance panel must be set to the up position.

50
Q

When is it recommended to disconnect both batteries? How many days of inactivity or what temperature?

A

Not flying for 3 days or more or temp less than -15 c