Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

Question 1

A thermal circuit breaker:

Accepted Answer

Protects the system in the event of overheating, even without exceeding the maximum permissible current.

Answer

Is a protection system with a quick break capacity of about one hundredth of a second.

Answer

Forbids any overcurrent.

Answer

Can be reset without any danger even if the fault remains.

Question 2

The advantages of grounding the negative pole of the aircraft structure are: 1) weight saving 2) easy fault detection 3) increase of short-circuit risk 4) reduction of short-circuit risk 5) circuits are not single-wired lines. The combination regrouping all the correct statements is:

Accepted Answer

1, 2, 4

Answer

2, 3, 5

Answer

1, 2, 3

Answer

1, 3, 5

Question 3

The fuel tanks of aircrafts must be checked for water

Accepted Answer

Before the first flight of the day or after a long turnaround time.

Answer

Immediately after every refuelling.

Answer

During refuelling.

Answer

Before each flight.

Question 4

A flight control surface actuator is said to be "reversible" when:

Accepted Answer

There is feedback to the pilot's controls of the aerodynamic forces acting on the control surface.

Answer

The pilot does not feel any force when moving that flight control surface in flight.

Answer

The flight control system has an alternate means of control in case of a control jam.

Answer

There is a need to have an artificial feel system.

Question 5

The primary purpose of the bleed valves fitted to axial flow compressors is to:

Accepted Answer

Reduce the likelihood of compressor stall.

Answer

Control the acceleration time of the engine.

Answer

Spill compressor air should the engine overspeed thus controlling the speed.

Answer

Enable an external air supply to spin up the compressor for engine starting.

Question 6

Immediately after starting engine(s) with no other electrical services switched on, an ammeter is showing a high charge rate to the battery:

Accepted Answer

Would be normal and is only cause for concern if the high charge rate persists.

Answer

Indicates a faulty reverse current relay.

Answer

Indicates a generator failure, thus requiring the engine to be shut down immediately.

Answer

Indicates a battery failure since there should be no immediate charging.

Question 7

Pulling the fire shutoff handle causes a number of devices to disconnect. In respect of the AC generator it can be said that the:

Accepted Answer

Exciter control relay and the generator breaker open.

Answer

Exciter control relay opens.

Answer

Generator breaker opens.

Answer

Exciter control relay, the generator breaker and the tie breaker open.

Question 8

Which of these statements about composite and metal structures are correct or incorrect? 1) In a structural component with given dimensions constructed of composite materials, the strength is the same in all directions. 2) Composite materials enable structures with higher strength / weight ratio than metal structures.

Accepted Answer

1) is incorrect, 2) is correct.

Answer

1) is incorrect, 2) is incorrect.

Answer

1) is correct, 2) is incorrect.

Answer

1) is correct, 2) is correct.

Question 9

What is the purpose of the pack cooling fans in the air conditioning system?

Accepted Answer

Supplying the heat exchangers with cooling air during slow flights and ground operation.

Answer

Supplying the heat exchangers with cooling air during cruise flight.

Answer

Cooling of the APU compartment.

Answer

Supplying the passenger service unit (PSU) with fresh air.

Question 10

In the stator of a turbine, the speed V and static pressure Ps vary as follows:

Accepted Answer

V increases, Ps decreases.

Answer

V decreases, Ps increases.

Answer

V decreases, Ps decreases.

Answer

V increases, Ps increases.

Exam questions Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

ATPL - Airline Transport Pilot license: Aircraft General Knowledge - Airframe, Systems, Powerplant 10 Questions no time limit

Exam questions Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

ATPL - Airline Transport Pilot license: Aircraft General Knowledge - Airframe, Systems, Powerplant 10 Questions no time limit

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