Aircraft General Knowledge - Instrumentation - ATPL - Airline Transport Pilot license

Question 1

A "Bourdon tube" is used in:

Accepted Answer

Pressure sensors.

Answer

Smoke detectors.

Answer

Vibration detectors.

Answer

Turbine temperature probes.

Question 2

When climbing at a constant Mach number:

Accepted Answer

CAS decreases.

Answer

Difference between surrounding conditions and standard atmosphere must be known to deduce the CAS variation.

Answer

CAS remains constant.

Answer

CAS increases.

Question 3

Heading information from the gyromagnetic compass flux gate is transmitted to the:

Accepted Answer

Error detector.

Answer

Heading indicator.

Answer

Erecting system.

Answer

Amplifier.

Question 4

In the building principle of a gyroscope, the best efficiency is obtained through the concentration of the mass:

Accepted Answer

On the periphery and with a high rotation speed.

Answer

Close to the axis and with a high rotation speed.

Answer

On the periphery and with a low rotation speed.

Answer

Close to the axis and with a low rotation speed.

Question 5

The signal transmitted by a radio altimeter is:

Accepted Answer

A frequency modulated carrier wave.

Answer

An amplitude modulated carrier wave.

Answer

A combination of frequency modulation and pulse modulation.

Answer

A pulse modulated carrier wave.

Question 6

A three-phase electrical tachometer consists of:

Accepted Answer

A three-phase generator, a synchronous motor and a magnetic tachometer.

Answer

Three speed probes and a phonic wheel.

Answer

A speed probe and a phonic wheel.

Answer

Three associated dynamos.

Question 7

A pitot tube covered by ice which blocks the ram air inlet will affect the following instrument (s):

Accepted Answer

Airspeed indicator only.

Answer

Vertical speed indicator only.

Answer

Altimeter only.

Answer

Airspeed indicator, altimeter and vertical speed indicator.

Question 8

The principle of the TCAS (Traffic Collision Avoidance Systems) is based on the use of:

Accepted Answer

Transponders fitted in the aircraft

Answer

Airborne weather radar system

Answer

Air traffic control radar systems

Answer

F.M.S. (Flight Management System)

Question 9

The upper antenna of the TCAS II is:

Accepted Answer

Directional to improve the surveillance of intruders.

Answer

Omni-directional because it is merged with the transponder antenna.

Answer

Directional because it is merged with the transponder antenna.

Answer

Omni-directional to improve the surveillance of intruders.

Question 10

Compared with a conventional gyro, a laser gyro:

Accepted Answer

Has a longer life cycle

Answer

Is influenced by temperature

Answer

Consumes a lot of power

Answer

Has a fairly long starting cycle

Quiz Aircraft General Knowledge - Instrumentation - ATPL - Airline Transport Pilot license

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