2. A.P.U.

Question 1

When the Apu master switch is released, a normal Apu shutdown occurs

Accepted Answer

With a delay if the bleed air was in use

Answer

Without delay in all cases

Answer

With a delay in all cases

Answer

Only after the main batteries are switched off

Question 2

What are the apu manual shut down possibilities in the cockpit

Accepted Answer

Apu master switch push button, Apu fire push button switch

Answer

Apu master switch push button

Answer

Apu fire push button switch, Apu shut off push button.

Answer

Apu avail push button switch.

Question 3

Normal electrical system being available, you may restart the apu up to

Accepted Answer

41,000 ft

Answer

31,000 ft

Answer

21,000 ft

Answer

45,00 ft

Question 4

When the Apu is running, the Apu fuel pump

Accepted Answer

Runs when the tank pump pressure is not sufficient

Answer

Runs all the time

Answer

Runs only in flight

Answer

Runs when the Apu fuel pump is selected on

Question 5

Normal Apu rotation speed (N%) is

Accepted Answer

99% ( Ground, nil bleed demand, OAT > 18c <35c)

Answer

Always steady at 99 %

Answer

Always 80 %

Answer

Always 75 %

Question 6

Apu master switch selected on

Accepted Answer

On illuminates blue, Apu system is supplied, Apu starts as soon as start P/b is depressed and intake flap opens

Answer

On illuminates blue, Apu system is supplied and Apu starts at 95%, Avail comes on

Answer

Apu fuel pump runs immediately

Answer

On illuminates green and Apu starts

Question 7

Apu bleed air is controlled

Accepted Answer

By ECB ( N% adjustment)

Answer

Not controlled

Answer

By Apu bleed valve, which operates as a shut off valve

Answer

By pack flow switch Lo/Norm/Hi on overhead panel

Question 8

Apu N indication becomes amber on ECAM SD, when

Accepted Answer

N >/= 102 %

Answer

N >/= 107 %.

Answer

N >/= 99 %

Answer

N >/= 95 %

Question 9

Apu EGT indication becomes red on ECAM SD, when

Accepted Answer

EGT >/= 675 c (Apu running) or EGT . 1090 c (during apu start)

Answer

EGT >/= 715 c ( Apu running)

Answer

EGT >/=1038 c ( Apu running)

Answer

EGT .> 950 c

Question 10

On ground, Apu provides

Accepted Answer

Electrical power & bleed air

Answer

Electrical power & hydraulic power

Answer

Hydraulic power & bleed air

Answer

Hydraulic power & electrical power

Question 11

Air Bleed extraction for wing anti-ice

Accepted Answer

Is not permitted

Answer

Is permitted

Answer

Is permitted only on ground

Answer

Is permitted only in flight

Question 12

Can you start the Apu using the a/c batteries

Accepted Answer

Yes

Answer

No

Answer

Only on the ground

Answer

Only in flight

Question 13

The Apu is supplied from the

Accepted Answer

Left fuel feed line

Answer

Right fuel feed line

Answer

Centre tank always

Answer

Right inner tank always

Question 14

If air bleed was used, after a manual shut down sequence the apu

Accepted Answer

Keeps running for between 60 sec

Answer

Stops immediately

Answer

Keeps running for four minutes

Answer

Keeps running for 10 mins

Question 15

Avail light illuminates on start p/b when

Accepted Answer

2 seconds after Apu N reaches 95 %

Answer

External power is disconnected

Answer

Apu electric power is used

Answer

Main engine generator is on line

Question 16

The Apu has its own lubrication system

Accepted Answer

Yes

Answer

No

Answer

No, it is lubricated and cooled by hydraulic fluid from the green system

Answer

No, it uses the same oil as engine no. 2

Question 17

What determines the Apu speed in accordance with air bleed demand

Accepted Answer

Electronic control box

Answer

Air conditioning system

Answer

Air intake system

Answer

Main engine rpm

Question 18

Besides the master switch on the cockpit Apu panel, Apu shutdown is possible by

Accepted Answer

Pressing the Apu Shut Off push button on the external interphone panel or pushing the APU fire pushbutton (o/head fire p/b)

Answer

Switching off the left fuel pumps

Answer

Switching off the right fuel pumps

Answer

Turning off both main batteries

Question 19

The supply of electrical power has priority over bleed air supply;

Accepted Answer

Yes

Answer

No

Answer

Only above 25000 feet

Answer

Only when the ditching pushbutton has been selected on

Question 20

Master switch on, the ;

Accepted Answer

ECB is electrically supplied

Answer

Apu starts

Answer

Air intake flap closes

Answer

Apu fuel pump starts immediately

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2. A.P.U.

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	Created by Joe Bloggs over 5 years ago