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Flashcards in Electrical Deck (37)
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0
Q

An amber SMOKE annunciation in the GEN 1 pb

indicates what?

A

Smoke in the avionics ventilation system

1
Q

Are there any procedures in the pilot handbook which direct us to use the EMER GEN test switch?

A

No, this is a maintenance function

2
Q

If the GEN 1 line pb is selected to off, what becomes the power source to AC bus #1?

A

GEN 2, through the bus tie

3
Q

After selecting the GEN 1 LINE pb to off, is there any equipment still powered from GEN 1?

A

Yes, one fuel pump in each tank

4
Q

What will cause the RAT to extend automatically?

A

Loss of AC BUS 1&2 with airspeed above 100 knots

5
Q

In-flight with the airplane powered normally (both generators), we push the RAT MAN ON switch. What will power the AC and DC ESS buses?

A

The emergency generator

6
Q

What is the difference between this RAT MAN ON switch and the switch labeled similarly on the hydraulic panel?

A

Emergency generator operation through the electrical RAT MAN ON.

7
Q

What does the FAULT light in the RAT & EMER GEN indicate?

A

FAULT light is illuminated if the emergency generator is not supplying power when AC BUS 1 & 2 are not powered

8
Q

What does a fault light in the BAT pb indicate?

A

Charging current is outside limits

9
Q

What does the indication ___% in the GEN 1 icon indicate?

A

GEN 1 current load

10
Q

Upon entering the flight deck prior to the first light of the day, what should the battery voltage be?

A

Greater than or equal to 25.5 V

11
Q

What is the primary purpose of the batteries?

A

Emergency electrical and APU starting

12
Q

During preflight, what options are available if the battery voltage for either battery is below 25.5 V?

A

Either replace the battery or using external power, complete a 20 minute charge, and recheck for sufficient voltage

13
Q

During the safety and power on checklist, why is the battery check accomplished with the batteries in the OFF position?

A

To determine the exact battery voltage without the batteries powering any buses.

14
Q

If the BATT switches are in AUTO position overnight without any other power, will the batteries discharge completely?

A

No

15
Q

Under what conditions are the batteries connected to the DC battery bus?

A

When needed for APU start, when in emergency electrical configuration less than 100 knots, or batteries require charging (voltage < 25.5 V)

16
Q

When is the main galley bus automatically shed?

A

Single generator operation

17
Q

If the main galley bus sheds automatically on a single generator or power source, how is it powered on the ground?

A

All galley buses are supplied with APU or external power

18
Q

What does the FAULT light in the IDG pushbutton indicate?

A

High oil temperature or low oil pressure

19
Q

What precautions exist when disconnecting and IDG?

A

Do not hold the disconnect pb for more than three seconds. The engine must be running or windmilling.

20
Q

If the pilot inadvertently pushes the IDG disconnect, can it be reconnected?

A

Not in flight

21
Q

The normal priority for supplying electrical power to the AC buses is:

A

Engine generators, ext power, APU generator

22
Q

What does the FAULT light indicate in the GEN 1?

A

A fault has been detected

23
Q

What is the normal power source for AC ESS bus?

A

AC BUS 1

24
Q

Can AC 2 be used to power the AC ESS bus?

A

Yes, through the AC ESS FEED pb (when selected)

25
Q

What does the FAULT light in the AC ESS FEED pb indicate?

A

A fault has been detected, follow the ECAM procedure

26
Q

What does the green AVAIL light indicate in the EXT PWR pb?

A

External power is connected and within normal parameters

27
Q

If the AVAIL light is present in the EXT PWR pb and a green AVAIL light is on the APU, what is the source of electrical power (engines shut down)?

A

The APU. The EXT PWR must be selected on.

28
Q

If both engines were started at the gate using external electrical power, with the EXT PWR ON light still be illuminated?

A

Yes, however the engine driven generators are supplying power to the aircraft

29
Q

If EXT power is in use during APU start, does the green AVAIL light in the APU start pb indicate it is now the source of ship’s electrical power?

A

No, EXT has priority over the APU. The green APU AVAIL light indicates that the APU generator is available.

30
Q

In the emergency electric configuration, when will the DC BAT bus be automatically connected to the batteries?

A

Loss of AC buses 1 & 2, below 100 knots

31
Q

If landing in the emergency electric configuration and speed decreases below 50 knots, the AC ESS bus is shed. What would be the indication to the crew?

A

Loss of display units

32
Q

What is the significance of the green circuit breakers?

A

Monitored by ECAM

33
Q

Why do the wing tip brake circuit breakers have red caps installed on them?

A

To prevent in-flight resetting

34
Q

The FASTEN SEAT BELT, NO SMOKING, and EXIT signs come on automatically when the cabin altitude exceeds ____ feet, regardless of the respective switch position.

A

11,300 feet

35
Q

When will the emergency lighting system aluminate automatically?

A

When the normal aircraft electrical power system fails

36
Q

What is included in the aircraft emergency lighting?

A

Overhead emergency lights, exit signs, and floor proximity emergency escape path marking system