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AC ESS BUS is normally supplied by the :

A、AC BUS 1.

B、AC BUS 2.

C、Emergency Generator.

答案：A

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The ATC transponders and DME transponders are:

A. Connected by ARINC buses to exchange distance data.

B. Connected by a suppressor coaxial which transmits an analog signal preventing simultaneous transmission.

C. Not connected.

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If smoke is detected in a cargo compartment what happens ?

A. SMOKE light comes on + Continuous Repetitve Chime + MASTER WARNING + ECAM Message.

B. The CIDS duplicates the cargo smoke waring to the cabin.

C. Lights come on.

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What is the purpose of the spring loaded blocking piston in the manual selector valve ?

A. To prevent door opening if pressure is <3000 psi.

B. To lock the selector in the OPEN/CLOSE position until the actuator is fully opened/retracted.

C. To ensure correct pressure in the extension chamber of the actuators before closing.

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Which hydraulic system powers normal landing gear operation?

A. Green system.

B. Blue system.

C. Yellow system.

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Which ADIRU does not supply the DMC 1 ?

A. ADIRU 1

B. ADIRU 2

C. ADIRU 3

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What does the green light fitted near the manual selector valve indicate ?

A. The yellow hydraulic pressure is available to operate the door.

B. The door is fully open and locked.

C. The door is correctly unlatched and unlocked.

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Are wing tank pumps running while center tank is supplying ?

A. Yes, wing tank pumps are always runing

B. No, only when center tank is empty

C. No, because of center tank pump priority

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Which computers process the yaw damper order, if the autopilot is not engaged?

A. Either FMGC or ELAC

B. Either FMGC or FAC

C. FMCG and FAC

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In which fault is help from the ground mechanic required ?

A. If the start valve fails open.

B. If the start valve fails closed.

C. In neither case.

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When is the TAT probe heated ?

A. In flight, not on ground.

B. On ground,not in flight.

C. In icing conditions only.

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