Entry into airspace from an area where SSR operation has not been required.

 

4                   

unlawful interference with the planned operation of the flight.

 

 

Вопрос 244

The pulse repetition frequency (PRF) of a primary pulse radar is 500. Its maximum unambiguous range in NM

 

is approximately:

 

 

Ответы

1                   

3000 NM

 

2              

KM

 

3                   

160 KM

 

4                   

600 NM

 

 

Вопрос 245

The maximum range of primary radar depends on:

 

 

Ответы

1                   

frequency.

 

2              

pulse recurrence frequency.

 

3                   

wave length.

 

4                   

pulse length.

 

 

Вопрос 246

Minimum useful range of a primary radar requires:

 

 

Ответы

1              

Short pulses.

 

2                   

long pulses and low PRF.

 

3                   

short pulses and slow antenna rotation.

 

4                   

long pulses and high PRF.

 

 

Вопрос 247

Which of the following radar equipments operate by means of the pulse technique?

 

1) Aerodrome Surface Movement Radar

 

2) Airborne Weather Radar

 

3) Secondary Surveillance Radar (SSR)

 

4) Aerodrome Surveillance (approach) Radar

 

 

Ответы

1                   

2 and 4 only

 

2                   

1,2 and 4 only

 

3                   

2,3 and 4 only

 

4              

And 4

 

 

Вопрос 248

When an aircraft is operating its Secondary Surveillance Radar in Mode С an air traffic controller's

 

presentation gives information regarding the aircraft's indicated flight level in increments of:

 

 

Ответы

1              

Ft

 

2                   

200 ft

 

3                   

250 ft

 

4                   

150 ft

 

Вопрос 249

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:

 

 

Ответы

1                   

yellow to amber to blue.

 

2              

Green to yellow to red.

 

3                   

green to red to black.

 

4                   

yellow to orange to red.

 

 

Вопрос 250

The selection of code 7700 on an aircraft SSR transponder indicates:

 

 

Ответы

1                   

unlawful interference with the planned operation of the flight.

 

2                   

radio communication failure.

 

3              

An emergency.

 

4                   

transponder malfunction.

 

 

Вопрос 251

In weather radar the use of a cosecant beam in Mapping mode enables:

 

 

Ответы

1              

Scanning of a large ground zone producing echos whose signals are practically independent of distance.

 

2                   

better reception of echos on contrasting terrain such as ground to sea.

 

3                   

a greater radar range to be achieved.

 

4                   

higher definition echoes to be produced giving a clearer picture.

 

 

Вопрос 252

With mode-S each aircraft can be uniquely interrogated and identified by using the:

 

 

Ответы

1                   

twelve-pulse train giving 212 possible codes.

 

2                   

Special Position Identification (SPI) pulse.

 

3              

Bits address code, giving more than 16 million possible codes.

 

4                   

long (30.25 msec) P3 pulse.

 

Вопрос 253

The tilt angle of an Airborne Weather Radar (AWR) is set at +2°. If the beam width is 4° and the range of the

 

cloud is 40 NM, what is the approximate height of the cloud above or below the aircraft when the weather

 

return from the cloud just disappears from the screen?

 

 

Ответы

1                   

-6000 ft

 

2                   

-4000 ft

 

3                   

+4000 ft

 

4              

At the same height as the aircraft.

 

 

Вопрос 254

In SSR, the interrogations use different modes. If altitude reporting is required, the aeroplane's transponder

 

should be set to "ALT" and will respond to:

 

 

Ответы

1              

Mode С and A interrogations.

 

2                   

mode С interrogations only.

 

3                   

mode A interrogations only.

 

4                   

mode С and Ident interrogations.

 

Вопрос 255

Using SSR, the normal transmission from the АТС transponder in the aircraft consists of:

 

 

Ответы

1                   

the aircraft identification plus pulses giving the altitude.

 

2                   

pulses giving the altitude, plus any ident pulse.

 

3                   

the two pulses received plus the aircraft identification.

 

4              

The two pulses received plus an additional number of pulses between them.

 

 

Вопрос 256

The frequency of an SSR ground transmission is:

 

 

Ответы

1              

1030 ±0,2 MHz.

 

2                   

1120 ±0,6 MHz.

 

3                   

1090 ±0,3 MHz.

 

4                   

1050 ±0,5 MHz.

 

 

Вопрос 257

Airborne Weather Radar has been primarily developed to detect:

 

 

Ответы

1                   

areas of wind sheer and severe aircraft icing.

 

2              

The kinds of precipitation which are usually accompanied by turbulence.

 

3                   

all kinds of frozen precipitation such as hail, snow and graupel.

 

4                   

areas of severe clear air turbulence.

 

 

Вопрос 258

The main factor which determines the minimum range that can be measured by a pulsed radar is pulse:

 

 

Ответы

1                   

amplitude.

 

2                   

repetition rate.

 

3                   

frequency.

 

4              

Length.

 

Вопрос 259

When the Airborne Weather Radar (AWR) is operating in the weather (WX) mode the following type of beam is

 

used:

 

 

Ответы

1                   

85° Fan-shaped beam

2              

3-5° Pencil beam

 

3                   

85° Pencil beam

 

4                   

3° Fan-shaped beam

 

 

Вопрос 260

The operation of airborne weather radar equipment on the ground is

 

 

Ответы

1              

Only permitted with certain precautions, to safeguard health of personnel and to protect equipment.

 

2                   

totally prohibited.

 

3                   

permitted anywhere.

 

4                   

unrestrictedly permitted in aerodrome maintenance areas.

 

Вопрос 261

What is the maximum theoretical unambiguous range for a primary radar with a PRF of 400 pps?

 

 

Ответы

1              

NM

 

2                   

505 NM

 

3                   

303 NM

 

4                   

404 NM

 

 

Вопрос 262

Ignoring pulse length and fly-back, a radar facility designed to have a maximum unambiguous range of 60 km

 

will have a PRF of:

 

 

Ответы

1                   

3000

 

2              

2500

 

3                   

6000

 

4                   

3300

 

 

Вопрос 263

In order to indicate an emergency situation, the aircraft Secondary Surveillance Radar (SSR) transponder

 

should be set to:

 

 

Ответы

1                   

7000

 

2                   

7600

 

3              

7700

 

4                   

7500

 

 

Вопрос 264

The allocation of the 24-bit aircraft address used for mode S transponder operation, as described in ICAO

 

annex 10, states that:

 

 

Ответы

1                   

every aircraft will have been allocated with a NATO Aircraft Address which is hard coded into the airframe.

 

2                   

military aircraft will have been allocated with an ICAO Aircraft Address which is hard coded into the airframe.

 

3                   

civil aircraft will have been allocated with an ICAO Aircraft Address which is hard coded into the airframe.

 

4