1/30
Question ID: 107134

What is the frequency of a radio wave with a wavelength of 8.25 m?

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A

24.8 kHz

B

2.48 MHz

C

36.4 kHz

D

36.4 MHz
2/30
Question ID: 106616

The receiver aerial for a NAVSTAR / GPS system should be mounted?

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A

Under the fuselage in order to receive correction data transmitted by D-GPS stations

B

On the upper side of the fuselage in the vicinity of the center of gravity

C

Inside the tail fin to minimize the influence of reflections from the wing and fuselage

D

In the vicinity of the receiver to avoid long transmission lines
3/30
Question ID: 106617

In the NAVSTAR / GPS satellite navigation system, re-use of Selective Availability would give the option to artificially degrade the accuracy by?

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A

Shutting off selected satellites

B

Offsetting satellite atomic clocks by a predetermined constant amount

C

Dithering the satellite clock

D

Using a less accurate atomic clock in a satellite for signal processing
4/30
Question ID: 106615

What type of satellite navigation system NAVSTAR / GPS receiver is most suitable for use on board an aircraft?

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A

Sequential

B

Multiplex

C

Multichannel

D

Any hand held type
5/30
Question ID: 107135

What is the frequency of a radio wave with a wavelength of 2.54 m?

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A

118.1 MHz

B

1181 kHz

C

118.1 kHz

D

1,181 GHz
6/30
Question ID: 106618

In the NAVSTAR / GPS satellite navigation system, receiver clock error?

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A

Is negligibly small because of the great accuracy of the atomic clocks installed in the satellites

B

Can be minimised by synchronisation of the receiver clock with the satellite clocks

C

Is corrected by using signals from four satellites

D

Is the biggest part of the total error, it cannot be corrected
7/30
Question ID: 106623

What is the procedure to be followed if, on a flight under IFR conditions using the NAVSTAR / GPS satellite navigation system, the number of satellites required to maintain the RAIM (Receiver Autonomous Integrity Monitoring) function are not available? 

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A

The flight may be continued as planned if at least 4 satellites are available and the pilot monitors the GPS-System manually

B

The flight may be continued using other certificated navigation systems

C

The flight has to be continued under VFR conditions

D

A constant heading and speed must be flown until the required number of satellites are again available
8/30
Question ID: 107020

To provide a pilot with the position of the aircraft in the absence of radar.

ATC must have at its disposal at least?

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A

Two co-located VDFs, able to take bearings simultaneously on the transmitted frequency

B

Two VDFs at different locations, able to take bearings simultaneously on the transmitted frequency

C

Three VDFs at different locations able to take simultaneous bearings on different frequencies

D

One VDF able to take simultaneous bearings on different frequencies
9/30
Question ID: 106261

One of the possible disturbances of the ILS signal is scalloping. Which statement is correct?

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A

Scalloping are major changes or bends in the approach path which can not be followed by the aircraft

B

Scalloping causes rapid indicator changes from side to side of the intended approach path which can not be followed by the aircraft

C

Scalloping are rapid changes or bends which can be followed by the aircraft

D

Scalloping are minor changes or bends which can be followed by the aircraft
10/30
Question ID: 113999

The main factors that determine cloud detection by airborne weather radar are the?

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A

Size of the water drops, wavelength and frequency used

B

Rotational speed of the radar scanner and range from cloud

C

Range from cloud, wavelength and frequency used

D

Size of the water drops and diameter of the radar scanner
11/30
Question ID: 107002

A VOR and an NDB are co-located. You cross the VOR radial of 240° on a heading of 360° (M). 

In the vicinity of the station you should read a relative bearing on the ADF of?

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A

60°

B

240°

C

120°

D

300°
12/30
Question ID: 107072

The VDF class-letter indicates the accuracy of the bearing information in terms of the?

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A

Time in seconds

B

Angle in degrees

C

Range in NM

D

Width in minutes
13/30
Question ID: 113968

A Mode S transponder receives among other pulses a short P4 pulse from an interrogator.

What does this mean??

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A

The interrogator transmits a Mode A only all call

B

The interrogator transmits a Mode A/C only all call

C

The interrogator transmits a Mode S only all call

D

The interrogator transmits a Mode A/C/S all call
14/30
Question ID: 106896

How is the GPS receiver able to calculate aircraft's ground speed?

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A

Using aircraft position and known reference points on the ground

B

Using the time measured from the signal leaving the satellite to the receiver

C

Using the pseudo-range measurements

D

Using the space vehicle (SV) Doppler frequency shift
15/30
Question ID: 107060

Where is information about the wind direction and velocity derived from?

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A

Wind information is derived by the flight management computer (FMC) by heading, drift, true air speed and ground speed inputs

B

Wind information is directly entered into the flight management computer (FMC) by pilots or dispatchers

C

The pilots enter wind data manually, based on current available information

D

Wind information is uploaded via data link from the nearest met office
16/30
Question ID: 106401

On an RMI the front end of a VOR pointer indicates the?

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A

Magnetic bearing from the station

B

Radial

C

Magnetic bearing to the station

D

Radial plus 180°
17/30
Question ID: 113905

Under CS-25 colour code rules features displayed in cyan/blue, on an Electronic Flight Instrument Systems (EFIS), indicate?

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A

The sky

B

The flight director bar(s)

C

Flight envelope and system limits

D

Engaged modes
18/30
Question ID: 106462

According to ICAO DOC 9613 

Which is true?

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A

All RNP procedures require approval

B

Only specific RNP procedures require approval

C

RNP procedures require approval and are operator dependent

D

No RNP procedures require approval
19/30
Question ID: 107119

The phase angle of a wave is?

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A

The position of a modulation on a wavelength expressed in degrees from 000° to 360°

B

The deflection on a wave expressed in degrees from 000° to 360°

C

The fraction of one wavelength expressed in degrees from 000° to 360°

D

The angle of the modulation on a wavelength expressed in degrees from 000° to 360°
20/30
Question ID: 114062

In the Mapping Mode of an airborne weather radar which can utilize two different beam shapes, the?

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A

Cosec2 beam effective up to a range of 150 NM is used

B

Pencil beam to a maximum range of 60 NM is used

C

Cosec2 beam effective up to a maximum of 50 NM to 60 NM range is used

D

Pencil beam effective from zero to 150 NM is used
21/30
Question ID: 106457

What is true about Performance Based Navigation (PBN)?

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A

It is not sensor specific

B

As with conventional navigation it requires a ground-based infrastructure

C

It is based on navigation specifications which are sensor-specific

D

It requires the development of sensor-specific procedures and routes
22/30
Question ID: 107068

An Airborne Weather Radar (AWR) can be of assistance for navigation and position reference. 

The AWR can be used to determine the aircraft's position by?

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A

Using the mapping mode to obtain a relative bearing and distance from the aircraft to suitable echoes on the display

B

Selecting the mapping mode and choosing a large built-up area to obtain a relative bearing and distance from the aircraft

C

Obtaining the magnetic bearing and distance from the aircraft

D

Using the mapping mode to obtain a magnetic bearing and distance from the aircraft to suitable echoes on the display
23/30
Question ID: 113981

Where is pulse modulation used?

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A

In Radar

B

In VOR

C

In ILS localizer

D

In VHF
24/30
Question ID: 107197

The indication of FROM / TO indicator of a VOR shifts from TO / FROM (and vice versa) when the value difference between selected course and the measured radial passes in either direction?

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A

180

B

90

C

135

D

45
25/30
Question ID: 106332

Which statement about the errors and effects on NDB radio signals is correct?

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A

Night effect is a result of interference of the surface wave and the space wave causing a reduction in range

B

Shore line effects may cause a huge bearing error due to reflection of the radio signal onto steep coasts

C

Lightning during atmospheric disturbances may cause a reduction of the signal strength that may result in only slight bearing errors

D

The mountain effect is caused by reflections onto steep slopes of mountainous terrain which may cause big errors in the bearing
26/30
Question ID: 107260

The abbreviation A3E is used for the type of transmission in which the carrier wave is?

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A

Amplitude modulated to transmit the Morse code ident, as is used by a VOR

B

A continuous wave interrupted with a keyed Morse code ident as used by an NDB

C

Interrupted to transmit the Morse code identification, as used by an NDB

D

Amplitude modulated by a speech signal, such as is used for VHF-COM
27/30
Question ID: 107136

Electromagnetic waves in the LF band have a frequency spectrum of?

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A

30 - 300 kHz

B

300 - 3000 kHz

C

3 - 30 kHz

D

30 - 300 MHz
28/30
Question ID: 107201

The simplest type of antenna construction is a?

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A

Parabolic antenna used in weather radars

B

Dipole antenna which is a wire of length equal to one half of the wavelength

C

Slotted antenna used in modern weather radars

D

Loop antenna used in ADF receivers
29/30
Question ID: 106245

Regarding monitoring system of the VOR - which statement is correct?

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A

Failure of the VOR station to stay within required limits can cause removal of identification and the navigation components from the carrier wave to cease

B

System monitors directly the phase of the reference signal and the phase of the variable signal

C

The monitoring system detects a change in the measured radial and the transmission power will be reduced and consequently only aircraft in the Terminal Area can use the VOR

D

Failure of the VOR stations to stay within required limits will trigger VOR caution annunciator in the cockpit
30/30
Question ID: 113945

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

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A

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

B

VOR / DME Area Navigation computer is receiving neither radial nor distance data information from VOR / DME stations

C

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

D

When DR is selected by the pilot
Finish Test
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