Vayudoot Aviation

1. When using APU bleed to supply the packs, with the pack flow selector at LO, the pack airflow is:

80% of normal

110% of normal

120% of normal

Normal

2. Trim air valves are controlled by:

The zone controller.

Hot air pressure regulating valve.

The pack controller

Anti-ice valve.

3. Emergency ram air inlet. When set to “ON” the ram air valve will open and supply airflow:

Provided ditching is not selected

In any case

Diff. press < 1 psi, and ditching not selected

Provided ditching is selected.

4. The zone controller optimizes temperature by action on:

Trim air valve

Pack flow control valve

Hot air pressure regulating valve

Pack anti-ice valve

5. During landing run, Ram Air Inlet flaps open when speed is less than:

70 kts (after 1 minute delay)

85 kts (after 20 seconds delay)

77 kts (after 30 seconds delay

70 kts (after 20 seconds delay)

6. What happens when a temperature selector rotary knob is adjusted?

Nothing as there is no relationship between a temperature selector knob and the trim air valve.

A signal is sent to the zone controller requesting a different temperature.

The associated trim air valve immediately moves to a different position.

7. The vent fan runs any time there is a normal ships power and the isolation valves are open.

True.

False.

8. The APU BLEED FAULT indicates that the main APU controller is in fault

True

False.

9. When APU is supplying the packs, the pack controller sends a demand signal to increase airflow when a zone temperature cannot be satisfied. This signal is sent to the:

Engine interface units EIU’s'

Pack Outflow Control Valve.

APU ECB.

Pack Ram Air Inlet Flap.

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

Cold air

Warm air

11. At what cabin altitude do you get an ECAM warning?

14,000 feet.

9,000 feet

8,800 feet.

9,550 feet

12. When does normal depressurization occur?

On landing touchdown

After flap retraction.

100 feet AGL above touchdown.

It is complete 1 minute after touchdown.

13. In case of zone controller primary and secondary channel failure, what temperatures are maintained by pack one and pack two?

25 deg.C both

15 deg.C both

24 deg.C for pack one and 15 deg.C for pack two

20 deg.C for pack one and 10 deg.C for pack two

14. During flight below _____, the Ram Air Valve can provide an emergency source of conditioned air during non-pressurized flight.

8,000 feet

12,500 feet

10,000 feet

5,000 feet

15. With APU BLEED ON and engine BLEED switches ON with engines running, what is the position of the engine bleed valves?

Closed

Open

Depends on the crossbleed selector

16. Aft cargo indications may be found on which ECAM page(s)?

Only the CAB PRESS page.

The CRUISE page and the COND page.

Only the CRUISE page.

Only the BLEED page.

17. Engine flow demand, when the heating or cooling demand in one zone cannot be satisfied:

The minimum idle must be increased manually

The APU must be used to supply additional air

In any case, flight idle is sufficient

The minimum idle is increased automatically

18. The PACK FLOW controller is set to NORM and yet the ECAM display shows PACK FLOW to be high. How is this possible?

As the engines are not running the PACK FLOW indicators are at the position they were selected to at the last shut down.

HI flow is automatically selected regardless of PACK FLOW selector position because air is only being supplied by the APU.

With cold outside air conditions the PACK FLOW is automatically increased to help increase the cabin temperature.

As no bleed air is flowing the PACK FLOW valves are spring loaded to the fully open position.

19. 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

No

Yes

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

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

0 psi.

1 psi.

8.6 psi.

2 psi.

21. What does the CARGO HEAT HOT AIR FAULT light indicate?

A duct overheat is detected.

The system will reset if the ISOL VALVE switch is ON.

The Aft Cargo Pressure Regulating valve closes.

All of above.

22. Pressurization is normally automatic. Can you interfere with it?

Both are correct.

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

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

23. On ECAM Cab. press page, the outflow valve indicator changes to amber if:

It is fully open in flight

It is fully open on the ground

It is fully closed

It is not fully open on the ground

24. When does normal pressurization occur?

After rotation.

After second engine start.

Pressurization occurs during the takeoff roll.

Pressurization occurs during taxi

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

They must be selected off on hot days only.

They must be selected off

They automatically close.

They must be selected off on cold days only

26. In flight with pressure controller 1 in use, if it fails:

You have to use the manual control

You have to select manually controller 2

You have to set the landing elevation.

Transfers automatically to controller 2

27. The Ram Air valve:

Will open automatically after engine start.

Must be manually activated.

Should be opened for increased ventilation while in flight.

28. Pressurization indications are found on which ECAM page(s)?

On the CAB PRESS & BLEED pages.

The in-flight ECAM cruise page and the CAB PRESS page.

Only on the CAB PRESS page.

BLEED page.

29. To see the operation of the outflow valve, it is necessary to call ECAM:

Vent page

Cond page

Bleed page

Press page

30. What is the Norm.Max. cabin altitude?

9,550 ft +/- 350 ft

800 ft

14,000 ft

8,000 ft

31. When the pack flow control knob is positioned to HI, air flow is:

120% of normal rate.

100% of normal rate.

150% of normal rate.

80% of normal rate.

32. How can you change controllers during flight?

Cycle the CABIN PRESS MODE SEL pushbutton to the MAN position then back to AUTO.

Cycle the cabin pressurization MAN V/S CTL switch

Cycle the LDG ELEV AUTO knob out of the AUTO position then back to AUTO.

33. Pressurization controllers receive inputs from:

LGCIU’s and pitot static sources.

LGCIU’s and the MCDU.

LGCIU, ADIRU, FMGS, and EIU.

MCDU and LGCIU’s.

34. In case of zone controller primary and secondary channel failure, what temperatures are maintained by Packs 1 and 2?

15 deg.C for both.

20 deg.C for Pack one and 10 deg.C for Pack two

24 deg.C for Pack one and 15 deg.c for Pack two.

25 deg.C both.

35. Which configuration is the avionics ventilation system in while airborne with no abnormals present?

Closed.

Open

Fire.

Smoke.

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

Three rotary temperature selectors and one zone.

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

Four rotary temperature selectors and four zones.

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

37. Pack controller, secondary channel failure

Pack outlet temperature is controlled at 15 deg.C'

Pack is lost

No effect on pack regulation backup mode is lost

No effect (all modes still available)

38. How many trim air valves are there?

Two: one for the cockpit and first class zone, and one for the cabin zone.

Four: one each for the cockpit zone, the first class zone, and two for the aft zone.

Three: one each for the cockpit zone, the forward cabin zone, and the aft cabin zone.

One trim air valve.

39. In case of trim air system fault (zone controller primary channel failure), the secondary channel of the zone controller regulated the zone temperature at:

15 deg.C

24 deg.C

10 deg.C

14 deg.C

40. What computers control the cabin and cockpit conditioned air?

Two pack controllers that pass information and requests to three zone controllers.

One zone controller that passes information and instructions to two pack controllers for three zones.

Two zone controllers that pass information and requests to two pack controllers.

Three zone controllers that pass information and instructions to two pack controllers for three zones.

41. Both pressurization auto controllers are set by the active flight plan loaded in the MCDU. The QNH entry on the MCDU Approach Performance page refines the depressurization schedule for the landing.

True

False

42. With the pressurization system in the automatic mode, which valves are closed when the ditching push button is selected on?

All valves below the water line.

APU inlet.

Only the avionics cooling valves.

The engine bleed valves.

43. Trim air valve, each one optimizes the temperature by:

Adding hot air

Modulating of pack flow

Adding fresh air

Adding re-circulated air

44. Which of the following statements is correct concerning conditioned air?

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

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

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.

45. What is the maximum negative differential pressure for the cabin?

2 psi.

0 psi.

1 psi.

3 psi.

46. Hot air press. reg. valve failed open

Cabin temperature will be controlled at the upper limit 30 deg.C

The temperature stays at the value selected

No effect

Optimized regulation is lost

47. The mixing unit is connected to:

Packs and cabin air

Pack 1 and pack 2 only.

Packs, emergency ram air inlet and Lp ground connector

Packs, cabin air, emergency ram air inlet and Lp ground connector

48. The RAM AIR switch should be used:

At any time.

Only when differential pressure is less than 1 psi.

Only after outflow valve is fully opened

When differential pressure is more than 1 psi.

49. The temperature of each aircraft zone is optimized by means of:

A PACK FLOW VALVE.

A ZONE control valve.

A HOT AIR valve.

A TRIM AIR valve.

50. During ground function operation, the outflow valve is:

Operating in abort mode

Positioned accordingly to FMGS demands

Fully open

Fully closed

Question Bank

Questions for Air Conditioning/Pressurization/Ventilation A320