Radio Navigation - ATPL - Airline Transport Pilot license

Question 1

In relation to the NAVSTAR/GPS satellite navigation system, 'Search the Sky' is a:

Accepted Answer

Geometric height above ground

Answer

Procedure performed by the receiver to recognise new satellites becoming operational

Answer

Continuous process by the ground segment to monitor the GPS satellites

Answer

Continuous procedure performed by the receiver that searches the sky for satellites rising above the horizon

Question 2

Which one of the following disturbances is most likely to cause the greatest inaccuracy in ADF bearings?

Accepted Answer

Skywave distortion of the null position and is maximum at dawn and dusk

Answer

Quadrantal error

Answer

Coastal effect

Answer

Precipitation interference

Question 3

In order to obtain an ADF bearing on a system using sense and loop aerials, the:

Accepted Answer

Signal must be received by both the sense and loop aerials

Answer

BFO switch must be selected to 'ON'

Answer

Mode selector should be switched to 'loop'

Answer

Uses pulse technique to determine the radial.

Question 4

In an Airborne Weather Radar that has a colour cathode ray tube (CRT) increasing severity of rain and turbulence is generally shown by a change of colour from:

Accepted Answer

Green to yellow to red

Answer

Yellow to orange to red

Answer

Green to red to black

Answer

The frequencies employed are too high to give returns from moisture sources

Question 5

In Airborne Weather Radar (AWR), the main factors which determine whether a cloud will be detected are:

Accepted Answer

Size of the water drops, wavelength / frequency used

Answer

Rotational speed of radar scanner, range from cloud

Answer

Size of the water drops, diameter of radar scanner

Answer

L2-coarse acquisition (C/A)

Question 6

Under which of the following circumstances does a VOR/DME Area Navigation system switch to Dead Reckoning mode?

Accepted Answer

Beam width

Answer

VOR/DME Area Navigation computer is not receiving information from the aircraft compass system.

Answer

VOR/DME Area Navigation computer is not receiving information from the Air Data Computer.

Answer

When "DR" is selected by the pilot.

Question 7

The skip distance of HF-transmission will increase with:

Accepted Answer

Higher frequency and higher position of the reflecting ionospheric layer

Answer

Lower frequency and higher position of the reflecting ionospheric layer

Answer

Lower frequency and lower position of the reflecting ionospheric layer

Answer

North

Question 8

Which of the following equipments uses primary radar principles?

Accepted Answer

Airborne weather radar (AWR)

Answer

Distance Measuring Equipment (DME)

Answer

Secondary Surveillance Radar (SSR)

Answer

Global Positioning System (GPS)

Question 9

In the NAVSTAR/GPS satellite navigation system, what is the maximum time taken to receive the complete set of almanac data from all satellites?

Accepted Answer

12.5 minutes (= 30 seconds per data frame)

Answer

12 hours (= period of the satellites orbit)

Answer

25 seconds (= 1 second per data frame)

Answer

VOR/DME/VORTAC

Question 10

Given:W/V (T) 230/20 KT, Var. 6E,TAS 80 KTWhat relative bearing from an NDB should be maintained in order to achieve an outbound course of 257°(M) from overhead the beacon?

Accepted Answer

188

Answer

172

Answer

008

Answer

352

Quiz Radio Navigation - ATPL - Airline Transport Pilot license

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