Electrical Flashcards

1
Q

What is the normal electrical supply for AC EMER BUS?

A

AC ESS BUS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How is an IDG disconnect confirmed?

A

The IDG FAULT light extinguishes and Gen FAULT light

illuminates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The IDG is disconnected while airborne, when can the IDG be reconnected?

A

Only by a mechanic when on the ground

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

In the A300 electrical system, what are the 4 AC buses?

A

AC EMER, AC ESS, and AC #1 & #2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the normal electrical supply for AC ESS BUS?

A

AC bus #1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What happens when both AC OVRD Supply switches are

selected ON?

A

AC EMER, AC ESS, and DC ESS are the only busses supplied

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

If the AC ESS BUS is lost, how may the AC EMER BUS be

supplied?

A

DC ESS BUS via automatic activation of the Emergency Static

Inverter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

In the A300 electrical system, what are the three DC Buses?

A

HOT Battery Bus, DC ESS, and DC NORM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which switch will manually connect the batteries to the DC

ESS bus?

A

BAT OVRD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is lost with the BAT OVRD switch selected ON?

A

STBY GEN operation, BAT overheat protection, BAT charging

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Avionics smoke drill is equivalent to standby generator in that
they both have three buses that are de-energized. What three
busses are they?

A

AC Bus 1 & 2 and DC Norma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How does selecting the LAND RECOVERY switch ON affect the

STBY GEN operation?

A

It disconnects the DC ESS BUS from the STBY GEN and uses the

batteries to power the DC ESS BUS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which system is not recovered with the LAND RECOVERY

switch selected ON?

A

Kruger Flaps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Selecting the MECH CALL HORN CTL switch (on the overhead

panel) to ON does what?

A

It deactivates the nose gear mechanic call horn for battery

discharge on an unpowered aircraft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

If OVRD SUPPLY #1 is supplying AC ESS BUS, and the #1 IDG

fails, how is power restored to the AC ESS BUS?

A

Deselect OVRD SUPPLY #1 then Select OVRD SUPPLY #2 ON

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

During an electrical emergency, what items are recovered

when the LAND RECOVERY switch is selected ON:

A

1 slat motor, 1 flap motor, spolier/speedbrake/ground spoiler
panels 2,3,5,7, Normal Brakes, Normal Anti-Skid

17
Q

In normal operation, what powers AC BUS 2?

18
Q

If AC ESS BUS is lost due to a fault on the AC BUS #1, how is
power restored to the AC ESS BUS?

A

Select OVRD SUPPLY 1 switch to ON

19
Q

During STBY GEN operation, if an APU start is unsuccessful,
why is it important to place the APU Master switch back to the
OFF position?

A

To re-connect the DC Standby generator and disconnect the 3

batteries from the DC Ess Bus

20
Q

How can the crew confirm that the standby generator is

operating and supplying power to the electrical system?

A

The Blue AC EMER ON INV light and the Amber DC ESS ON BAT

lights are extinguished and Fuel Crossfeed valve is in-line

21
Q

The aircraft is in-flight, the #1 engine has failed, and the APU
is not operating, how will the electrical system be configured?

A

GEN 2 automatically powers AC BUS 1

22
Q

What will the Battery Charge Controller (BCC) do if BAT 1

overheats?

A

Automatically disconnect BAT 1

23
Q

A Fault is detected on AC BUS 1 and it is disconnected, which
switch will connect GEN 2 to the AC ESS BUS directly?

A

OVRD SUPPLY 2

24
Q

The APU is operating and EXT PWR is connected and selected
ON. In this configuration, what is supplying the electrical
system?

A

EXT PWR, it has priority over the APU GEN

25
What is the NORMAL supply for DC ESS BUS?
DC NORM BUS via DC BUS TIE and the ESS TR
26
Which electrical busses does the Standby Gen supply?
DC ESS bus, AC ESS #2 bus, AC EMER bus
27
If the aircraft batteries are the only source of electrical power, what busses will they supply?
DC ESS BUS and AC EMER BUS
28
With the Standby Generator running, what happens if the BAT | OVRD is selected ON?
Standby Gen quits supplying the emergency electrical system
29
When does the Battery Charge Controller (BCC) not connect | the batteries to the DC ESS BUS?
DC ESS BUS supplied by Standby Gen
30
If all electrical power sources are available, what is the auto switching priority of the AC electrical system?
Onside Gen, Ext power, APU, Other Gen
31
In the electrical system the green flow bars on the battery tiles are an indication that the battery tiles are in what state?
Connected to the DC ESS bus
32
In the electrical system, what items are not on the HOT | battery BUS?
Eng and Cargo Fire detection systems
33
What is the DC NORMAL Bus powered by?
TR 1 & 2
34
When powering up an unpowered aircraft, what is indicated if the blue AC EMER ON INV light does not illuminate when the batteries are switched on?
A fault with the Inverter
35
Illumination of the AC BUS 1 OFF, AC ESS BUS, and AC EMER ON INV lights while inflight indicates that this component has failed.
AC BUS #1
36
Both generators fail in-flight. The standby generator fails to automatically start. Which switch can manually start the standby generator?
STBY GEN