A320 Air Conditioning System (ATA21)

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A320 Air Conditioning System (ATA21) Quiz

This quiz contains 20 question on Airbus 320 (A320) and time limit is 30 min.

All the question are compulsory for the submission of the quiz.

The number of attempts allowed is unlimited.

Note : The question will be picked randomly from a question bank hence few question can repeat every time you attempt the quiz

ALL THE BEST

When would you select RAM AIR ON?

When pack temperatures are too high.

When there is smoke in the cabin

If additional cooling is required on the ground.

Dual pack failure or smoke removal.

What position do the pack valves go to in the event of a loss of the bleed system pressure?

Full open.

Closed.

Mid position

They remain in their last position.

The Ram Air valve:

Will open automatically after engine start.

Must be manually activated.

Should be opened for increased ventilation while on the ground.

Should be opened for increased ventilation while in flight.

When does normal depressurization occur?

It is complete 1 minute after touchdown.

After flap retraction.

On landing touchdown

100 feet AGL above touchdown.

Which of the following statements is correct concerning conditioned air?

Recirculating fans draw cabin air to a mixing unit where conditioned air is added.

Recirculated air, conditioned air and hot trim air are mixed then distributed to each zone.

Hot trim air is added to the mixing unit before distribution to each zone.

Conditioned air and trim air are mixed then distributed to each zone.

Trim air valve, each one optimizes the temperature by:

Adding hot air

Modulating of pack flow

Adding re-circulated air

Adding fresh air

To enable Ram air to the mixture unit, The Ram air switch should be used:

Only after outflow valve is fully opened

When pressure is greater than 1 psi diff

Only when differential pressure is less than 1 psi.

At any time

What is the Max. negative Diff. pressure for the cabin?

8.6 psi.

2 psi.

0 psi.

1 psi.

Pressurization controllers receive inputs from:

LGCIU’s and pitot static sources.

MCDU, pitot static sources and LGCIU’s.

LGCIU, ADIRU, FMGS, and EIU.

LGCIU’s and the MCDU.

10.

How many temperature selectors are there on the A320? How many temperature zones are there?

Two rotary temperature selectors, one for the cockpit and first class zone and one for the aft cabin zone.

Four rotary temperature selectors and four zones.

Three rotary temperature selectors, one each for the cockpit zone, the forward cabin zone, and the aft cabin zone.

Three rotary temperature selectors and one zone.

11.

Under what conditions should the pack flow controller be set to LO?

In cold conditions to achieve a higher cabin temperature range.

With a low passenger load to increase cabin temperature

With a low passenger load to reduce bleed air demand and improve fuel efficiency

With a high passenger load to reduce cabin temperature

12.

It is permissible to use simultaneously packs and LP ground unit during long stops in a hot airfield

Yes, if external temperature is greater than 50 deg C

Yes, provided the airflow supplied by the ground cart is less than 1.2 kg/s

Yes

13.

What happens to the pack flow control valves during engine start?

They automatically close.

They must be selected off.

They must be selected off on hot days only.

They must be selected off on cold days only.

14.

Bleed air supplied from the APU (APU bleed valve open), the pack flow is automatically selected:

High

Normal

Low

Econ. Flow

15.

Pressurization is normally automatic. Can you interfere with it?

Yes, manually set landing elevation using the LND ELEV AUTO selector.

Yes, CABIN PRESS MODE SEL to OVERRIDE and MAN V/S CTL toggle switch.

16.

What is the maximum altitude associated with the pressurization system?

41,000 feet

41,100 feet

39,100 feet

39,500 feet

17.

Hot air fault light illuminates on the air conditioning panel

The hot air press. reg. valve closes and the trim air valves open

The hot air press. reg. valve opens and the trim air valves open

The hot air press. reg. valve closes and the trim air valves close

The hot air press. reg. valve opens and the trim air valves close

18.

Conditioned air is distributed to

Cockpit, fwd and aft cabins

Cockpit, cargo bays and cabin

Cockpit, avionics bay and cabin

Cockpit, cabin and holds 1 and 2 only

19.

Does the trim air provide the warm air or the cold air to the air conditioning system?

Cold air

Warm air

20.

What limitation is associated with the ram air valve?

Operation is automatic.

Do not open if cabin pressure is greater than 1 psi.

Will not open if the DITCHING switch is off.

Only open while on the ground.

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