1) On a Fly By Wire system, the stabiliser trim is controlled by the Report

ELAC

ELAC and SEC

SEC

2) Fly By Wire systems in the fully active mode, the actuators will Report

Both be active

One in active mode, one in damping mode

Both be in damping mode, awaiting control inputs

3) Autopilots are normally classified as: Report

Aircraft Flight Control Systems, and are therefore normally serviced and maintained by Engine and Airframe technicians.

Aircraft Instrument Systems, and are therefore normally serviced and maintained by Avionics technicians.

Aircraft Hydraulic Systems, and are therefore normally serviced and maintained by Engine and Airframe technicians.

4) Aircraft equipped with auto-throttle systems, must have: Report

A Flight Management System (FMS)

An Automatic Flight Control System (AFCS) installed.

Either an Automatic Flight Control System (AFCS) or a Flight Management System (FMS) installed.

5) Which of the following components are part of an autopilot system? Report

Servomechanism

Electronic Flight Instrument System (EFIS) displays.

Both (a) and (b)

6) Most modern large air-transport aircraft are fitted with Report

One autopilot system capable of automatically landing the aircraft.

Three independent autopilot systems.

Three Flight Director systems driving one autopilot system.

7) In aircraft with hydraulic flight control systems, the autopilot system operates the flight controls by means of Report

Electro-hydraulic servos.

Mechanical-hydraulic servos.

Vacuum operated servos.

8) In autopilot systems, the force needed to move the flight control surfaces is generally provided by the Report

Pilot

Computer

Servos

9) The quasi-optical range of a VHF transmission is greater than the line-of-site range. What makes the greater distance possible? Report

Refraction

Diffraction

Reflection

10) The signal of a space wave is sometimes significantly reduced at the receiving site because of which of the following interactions? Report

Space-wave refraction

Ground-wave diffraction

Ground-wave reflections

11) On an energized half-wave antenna, which of the following electrical conditions exist? Report

Voltage is maximum at the ends

Voltage is minimum at the ends

Current is maximum at the ends

12) The Marconi antenna behaves as a dipole for which of the following reasons? Report

It is fed at one end

An image antenna is formed by reflections from the ground plane

A quarter- wavelength of conductor is mounted beneath the ground plane the dipole

13) What determines the bandwidth of an AM wave? Report

The highest modulating frequency

The number of sideband frequencies

The lowest modulating frequency

14) How does a receiver accomplish the squelch function? Report

By proportional blocking of the RF amplifier stage output

By blocking the detector or audio amplifier when there is no signal

By switching an inductive/capacitive filter into the output of the last RF amplifier

15) The LO frequency in a super heterodyne receiver is often higher than received signal. What is the reason for this? Report

Higher LO frequency improves the signal to noise ratio

A higher LO frequency improves the fidelity

A higher LO frequency provides a lower maximum to minimum capacitance ratio

16) A frequency multiplier achieves an output frequency three times higher than its input frequency by Report

Mixing second fixed frequency to give product of the two input frequencies

Selecting a harmonic generated by non-linearities in the circuit

Full wave rectification

17) If the signal to noise ratio at the input of a receiver is 10 :1 and at the output 2.5 : 1 then the noise factor is Report

4

25

12.5

18) A plot of the polar diagram of an installed antenna would be necessary when Report

Troubleshooting

Carrying out heavy maintenance

Installing a new extra radio system

19) Radio waves are Report

Magnetic fields only

Electro-static fields only

A combination of both magnetic and electro-static fields

20) Which type of radio waves are used for line - of - sight communication? Report

Sky waves

Space waves

Ground waves

EASA Questions Module 13 Set 8

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7

Set 8

Set 9

Set 10

Set 11

Set 12