Secondary Surveillance Radar: DGCA Air Navigation questions

Question 1

The special SSR codes are as follows: Emergency _______, Radio Failure _______, Unlawful Interference with the conduct of the flight _______.

Accepted Answer

7700, 7600, 7500

Answer

7700, 7500, 7600

Answer

7600, 7500, 7700

Answer

7500, 7600, 7700

Question 2

Secondary Surveillance Radar (SSR) is a form of ______ radar with ______ type emissions operating in the ______ band.

Accepted Answer

Secondary, Pulse, UHF

Answer

Primary, Pulse, SHF

Answer

Primary, Pulse, UHF

Answer

Secondary, FM, SHF

Question 3

If the SSR transponder IDENT button is pressed, what happens?

Accepted Answer

An identification pulse is automatically and continuously transmitted for 20 seconds, 4.35 μs after the last framing pulse

Answer

It causes a momentary distinctive display to appear on the controller's screen

Answer

An identification pulse is transmitted for 20 seconds, 4.35 μs before the last framing pulse

Answer

An identification pulse is transmitted for 10 seconds, 4.35 μs after the last framing pulse

Question 4

When using SSR, the ground controller will ask the pilot to cancel Mode C if there is a discrepancy of more than ______ between the radar-detected altitude and the pilot-reported altitude, with the altimeter subscale set to ______.

Accepted Answer

300 ft, 1013 hPa

Answer

100 ft, Regional QNH

Answer

50 ft, 1013 hPa

Answer

300 ft, Regional QNH

Question 5

Secondary radars require:

Accepted Answer

A target which will respond to the interrogation, and this target may be either an aircraft or a ground based transponder

Answer

A target which will respond to the interrogation, and this target will always be an aircraft

Answer

A target which will respond to the interrogation, and this target will always be ground based

Answer

A quiescent passive target that reflects signals

Secondary Surveillance Radar: DGCA Air Navigation questions

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