Radio communication failure.

 

 

Вопрос 211

Airborne weather radar uses the following wavelengths:

 

 

Ответы

1              

Centimetric

 

2                   

metric

 

3                   

hectometric

 

4                   

myriametric

 

 

Вопрос 212

The heaviest turbulence is likely to be encountered

 

 

Ответы

1              

Where the area of heaviest precipitation is closest to the edge of the thunderstorm cell.

 

2                   

in the very core of a thunderstorm cell.

 

3                   

about halfway between two thunderstorm cells.

 

4                   

in the area of heaviest precipitation.

 

Вопрос 213

In order to be able to penetrate cloud, a primary radar signal must have:

 

 

Ответы

1                   

a short pulse length.

 

2              

A long wavelength.

 

3                   

a high frequency.

 

4                   

a high PRF.

 

Вопрос 214

On the AWR display the most severe turbulence will be shown:

 

 

Ответы

1              

By a steep colour gradient.

 

2                   

alternating red and white.

 

3                   

in flashing red.

 

4                   

by a black hole.

 

Вопрос 215

In which mode of operation does the aircraft weather radar use a cosecant radiation pattern?

 

 

Ответы

1                   

MANUAL

 

2                   

CONTOUR

 

3                   

WEATHER

 

4              

MAPPING

 

Вопрос 216

What is the maximum theoretical unambiguous range for a primary radar with a PRF of 1000 pps?

 

 

Ответы

1              

KM

 

2                   

360 NM

 

3                   

81 KM

 

4                   

180 NM

 

 

Вопрос 217

Which combination of characteristics gives best screen picture in a primary search radar?

 

 

Ответы

1                   

Short pulse length and wide beam.

 

2                   

Long pulse length and wide beam.

 

3                   

Long pulse length and narrow beam.

 

4              

Short pulse length and narrow beam.

 

 

Вопрос 218

Refer to figure 062-18.

 

 

The magnetic heading of an aircraft is 040°. On the Airborne Weather Radar display the relative bearing of

 

and the distance to the most southerly part of Lands End (approximate position: 50°03'N, 005°40'W) are,

 

030°R and 80 NM. What is the position of the aircraft based on these observations? The slant range correction

 

and the map convergency between aircraft position and lands end may be neglected.

 

 

Ответы

1                   

(48°50'N, 006°22'W)

 

2                   

(49°35'N, 007°36'W)

 

3                   

(49°45'N, 007°42'W)

 

4              

(49°25' N, 007°30' W)

 

Вопрос 219

What is the maximum theoretical unambiguous range for a primary radar with a PRF of 550 pps?

 

 

Ответы

1                   

147 KM

 

2                   

320 NM

 

3              

KM

 

4                   

294 NM

 

Вопрос 220

In which frequency band do most airborne weather radars operate?

 

 

Ответы

1                   

VHF

 

2              

SHF

 

3                   

UHF

 

4                   

EHF

 

Вопрос 221

In an Airborne Weather Radar the areas of greatest turbulence are usually indicated on the screen by:

 

 

Ответы

1                   

areas which are coloured black.

 

2                   

blank areas where there is no colour.

 

3                   

colour zones of green and yellow.

 

4              

Colour zones of red and magenta.

 

Вопрос 222

With regard to SSR:

 

 

Ответы

1              

The interrogator is on the ground and the transponder is in the aircraft.

 

2                   

the interrogator is in the aircraft and the transponder is on the ground.

 

3                   

the interrogator is on the aircraft and the transponder is in the aircraft.

 

4                   

the interrogator is on the ground and the transponder is on the ground.

 

 

Вопрос 223

Maximum range obtainable from an АТС Long Range Surveillance Radar is approximately:

 

 

Ответы

1                   

100-200 NM

 

2                   

300-400 NM

 

3                   

50- 100 NM

 

4              

NM

 

Вопрос 224

A side lobe from the aerial of a weather radar may produce an echo on the screen known as a "height ring".

 

The pilot can use this:

 

 

Ответы

1                   

to determine the aeroplane's height above the surface.

 

2                   

as the zero point for range measurement.

 

3              

To determine that the weather radar is functioning.

 

4                   

as a range marker.

 

Вопрос 225

Pulse length, in a primary radar using pulse technique,determines:

 

 

Ответы

1              

Minimum measurable range.

 

2                   

maximum measurable range.

 

3                   

beam width.

 

4                   

target discrimination.

 

 

Вопрос 226

In order to ascertain whether a cloud return on an Aircraft Weather Radar (AWR) is at or above the height of

 

the aircraft, the tilt control should be set to: (Assume a beam width of 5°)

 

 

Ответы

1                   

2,5° down

 

2                   

5° up

 

3              

2,5° up

 

4                   

0°

 

 

Вопрос 227

The selection of code 7500 on an aircraft SSR transponder indicates:

 

 

Ответы

1                   

radio communication failure.

 

2              

Unlawful interference with the planned operation of the flight.

 

3                   

transponder malfunction.

 

4                   

an emergency.

 

Вопрос 228

In the SSR terminology "de-fruiting" means:

 

 

Ответы

1              

The removal from the display of random responses.

 

2                   

displaying only airplanes changing their altitude.

 

3                   

removing all different colors from the display, making it a mono-color display.

 

4                   

displaying only airplanes with a selected destination.

 

 

Вопрос 229

Which of the following lists the phenomena unlikely to be detected by radar?

 

 

Ответы

1                   

Wet snow and turbulence in cloud that has precipitation.

 

2                   

Turbulence in cloud that has precipitation.

 

3                   

Precipitation.

 

4