Radio Navigation - ATPL - Airline Transport Pilot license

Question 1

The ISO-ECHO facility of an airborne weather radar is provided in order to:

Accepted Answer

Detect areas of possible severe turbulence in cloud

Answer

Give an indication of cloud tops

Answer

Extend the mapping range

Answer

Inhibit unwanted ground returns

Question 2

Which of the following, if any, is a prerequisite if a receiver of a NAVSTAR/GPS satellite navigation system is to be used in combination with a multi sensor system?

Accepted Answer

The prescribed IFR-equipment must be installed and operational

Answer

The prescribed IFR-equipment must be in working correctly and the navigation information continuously displayed

Answer

The RAIM-function of the GPS receiver must be able to monitor all prescribed navigation systems

Answer

Multi-sensor systems are not certificated for flights under IFR conditions

Question 3

Quadrantal errors associated with aircraft Automatic Direction Finding (ADF) equipment are caused by:

Accepted Answer

Signal bending by the aircraft metallic surfaces

Answer

Misalignment of the loop aerial

Answer

Signal bending caused by electrical interference from aircraft wiring

Answer

Skywave/groundwave contamination

Question 4

The distance between a NAVSTAR/GPS satellite and receiver is:

Accepted Answer

Determined by the time taken for the signal to arrive from the satellite multiplied by the speed of light

Answer

Determined by the phase shift of the Pseudo Random Noise code multiplied by the speed of light

Answer

Calculated, using the WGS-84 reference system, from the known positions of the satellite and the receiver

Answer

Calculated from the Doppler shift of the known frequencies

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

Airborne weather radar systems use a wavelength of approximately 3 cm in order to:

Accepted Answer

Detect the larger water droplets

Answer

Obtain optimum use of the cosecant squared beam

Answer

Transmit at a higher pulse repetition frequency for extended range

Answer

Detect the smaller cloud formations as well as large

Question 7

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 8

In relation to the NAVSTAR/GPS satellite navigation system, what is involved in the differential technique (D-GPS)?

Accepted Answer

Fixed ground stations compute position errors and transmit correction data to a suitable receiver on the aircraft

Answer

Receivers from various manufacturers are operated in parallel to reduce the characteristic receiver noise error

Answer

The difference between signals transmitted on the L1 and L2 frequencies are processed by the receiver to determine an error correction

Answer

Signals from satellites are received by 2 different antennas which are located a fixed distance apart. This enables a suitable receiver on the aircraft to recognise and correct for multipath errors

Question 9

On what data is a VOR/DME Area Navigation system operating in the dead reckoning mode?

Accepted Answer

Heading from the aircraft compass

Answer

TAS from the Air Data Computer

Answer

The selected CDI course.

Answer

Radial from one VOR; distances from two DMEs

Question 10

In the Flight Management Computer (FMC) of the Flight Management System (FMS), data relating to V1, VR and V2 speeds is stored in the:

Accepted Answer

Performance database

Answer

Auto flight computer

Answer

Navigation database

Answer

Air data computer

Exam questions Radio Navigation - ATPL - Airline Transport Pilot license

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

Exam questions Radio Navigation - ATPL - Airline Transport Pilot license

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

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