Radio Navigation - ATPL - Airline Transport Pilot license

Question 1

The principle of operation of an ILS localiser transmitter is based on two overlapping lobes that are transmitted on (i) .......... frequencies and carry different (ii) ..........

Accepted Answer

(i) the same (ii) modulation frequencies

Answer

(i) different (ii) modulation frequencies

Answer

(i) the same (ii) phases

Answer

(i) different (ii) phases

Question 2

On which of the following radar displays is it possible to get an indication of the shape, and to some extent the type, of the aircraft generating the return?

Accepted Answer

Aerodrome Surface Movement Radar (ASMR)

Answer

Aerodrome Surveillance (approach) Radar

Answer

Secondary Surveillance Radar (SSR)

Answer

Airborne Weather Radar (AWR)

Question 3

Which of the following statements about the 'visibility' of NAVSTAR/GPS satellites is correct?

Accepted Answer

It varies, depending on the time and observer's location

Answer

It is greatest at the equator

Answer

It is the same throughout the globe

Answer

It is greatest at the poles

Question 4

Which of the following combinations is likely to result in the most accurate Area Navigation (RNAV) fixes?

Accepted Answer

DME/DME

Answer

VOR/DME

Answer

VOR/VOR

Answer

NDB/VOR

Question 5

A secondary radar can provide up to 4096 different codes. These 4096 codes can be used in:

Accepted Answer

All modes

Answer

Mode S

Answer

Mode C only

Answer

Mode A only

Question 6

Which of the following is an advantage of Ground/DF (VDF) let-down?

Accepted Answer

It only requires a VHF radio to be fitted to the aircraft

Answer

It does not require any special equipment, apart from a VHF radio, to be installed in the aircraft or on the ground

Answer

It does not require any special equipment to be fitted to the aircraft

Answer

It is pilot interpreted and does not require the assistance of ATC

Question 7

What is the maximum number of usable Secondary Surveillance Radar (SSR) transponder codes in Mode A?

Accepted Answer

4096

Answer

3600

Answer

1000

Answer

760

Question 8

In the Flight Management Computer (FMC) of the Flight Management System (FMS), data relating to cruising speeds is stored in the:

Accepted Answer

Performance database

Answer

Air data computer

Answer

Navigation database

Answer

Auto flight computers

Question 9

What is the inclination to the equatorial plane of the satellite's orbit in the NAVSTAR GPS constellation?

Accepted Answer

55°

Answer

45°

Answer

65°

Answer

35°

Question 10

Which one of the statements below is correct regarding the DME?

Accepted Answer

The DME operating frequencies are in the UHF frequency band.

Answer

The DME ground station is always co-located with a VOR station.

Answer

The indicated distance is the ground distance measured from the aircraft's projected position on the ground to the DME ground installation.

Answer

Two lines of position obtained from two different DME's give an unambiguous fix.

Quiz Radio Navigation - ATPL - Airline Transport Pilot license

Test 10 Questions ATPL - Airline Transport Pilot license - Radio Navigation, no time limit