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Quiz on Airbus Technical APU, created by Joe Bloggs on 13/09/2018.

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2. A.P.U.

2. A.P.U.

Question 1 of 20

1

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

Select one of the following:

  • Without delay in all cases

  • With a delay in all cases

  • With a delay if the bleed air was in use

  • Only after the main batteries are switched off

Explanation

Question 2 of 20

1

What are the apu manual shut down possibilities in the cockpit

Select one of the following:

  • Apu master switch push button, Apu fire push button switch

  • Apu master switch push button

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

  • Apu avail push button switch.

Explanation

Question 3 of 20

1

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

Select one of the following:

  • 31,000 ft

  • 21,000 ft

  • 41,000 ft

  • 45,00 ft

Explanation

Question 4 of 20

1

When the Apu is running, the Apu fuel pump

Select one of the following:

  • Runs when the tank pump pressure is not sufficient

  • Runs all the time

  • Runs only in flight

  • Runs when the Apu fuel pump is selected on

Explanation

Question 5 of 20

1

Normal Apu rotation speed (N%) is

Select one of the following:

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

  • Always steady at 99 %

  • Always 80 %

  • Always 75 %

Explanation

Question 6 of 20

1

Apu master switch selected on

Select one of the following:

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

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

  • Apu fuel pump runs immediately

  • On illuminates green and Apu starts

Explanation

Question 7 of 20

1

Apu bleed air is controlled

Select one of the following:

  • By ECB ( N% adjustment)

  • Not controlled

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

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

Explanation

Question 8 of 20

1

Apu N indication becomes amber on ECAM SD, when

Select one of the following:

  • N >/= 107 %.

  • N >/= 102 %

  • N >/= 99 %

  • N >/= 95 %

Explanation

Question 9 of 20

1

Apu EGT indication becomes red on ECAM SD, when

Select one of the following:

  • EGT >/= 715 c ( Apu running)

  • EGT >/=1038 c ( Apu running)

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

  • EGT .> 950 c

Explanation

Question 10 of 20

1

On ground, Apu provides

Select one of the following:

  • Electrical power & hydraulic power

  • Electrical power & bleed air

  • Hydraulic power & bleed air

  • Hydraulic power & electrical power

Explanation

Question 11 of 20

1

Air Bleed extraction for wing anti-ice

Select one of the following:

  • Is permitted

  • Is not permitted

  • Is permitted only on ground

  • Is permitted only in flight

Explanation

Question 12 of 20

1

Can you start the Apu using the a/c batteries

Select one of the following:

  • Yes

  • No

  • Only on the ground

  • Only in flight

Explanation

Question 13 of 20

1

The Apu is supplied from the

Select one of the following:

  • Left fuel feed line

  • Right fuel feed line

  • Centre tank always

  • Right inner tank always

Explanation

Question 14 of 20

1

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

Select one of the following:

  • Stops immediately

  • Keeps running for four minutes

  • Keeps running for between 60 sec

  • Keeps running for 10 mins

Explanation

Question 15 of 20

1

Avail light illuminates on start p/b when

Select one of the following:

  • External power is disconnected

  • 2 seconds after Apu N reaches 95 %

  • Apu electric power is used

  • Main engine generator is on line

Explanation

Question 16 of 20

1

The Apu has its own lubrication system

Select one of the following:

  • Yes

  • No

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

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

Explanation

Question 17 of 20

1

What determines the Apu speed in accordance with air bleed demand

Select one of the following:

  • Electronic control box

  • Air conditioning system

  • Air intake system

  • Main engine rpm

Explanation

Question 18 of 20

1

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

Select one of the following:

  • Switching off the left fuel pumps

  • Switching off the right fuel pumps

  • Turning off both main batteries

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

Explanation

Question 19 of 20

1

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

Select one of the following:

  • No

  • Yes

  • Only above 25000 feet

  • Only when the ditching pushbutton has been selected on

Explanation

Question 20 of 20

1

Master switch on, the ;

Select one of the following:

  • Apu starts

  • ECB is electrically supplied

  • Air intake flap closes

  • Apu fuel pump starts immediately

Explanation

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