1) In transponder decoder, the detected video signal are applied to Report

The spike eliminator

Pulse width limiter

Both (i) and (ii) in series

2) The encoder uses Report

One 10 bit shift register

Two 10 bit shift register

Two 20 bit shift register

3) With both inputs S0 and S1, the operating mode will be Report

Hold

Clear

Shift

4) For altitude encoding, a transparent disc is divided into Report

Lanes

Tracks

Tracks and segments

5) Mode A & C pulse spacing are respectively Report

S & 21 μs

12 & 16 μs

8 & 17 μs

6) The maximum diameter of a water droplet which can remain in cloud without falling to earth depends on Report

Altitude

Air Speed

Speed of the up-draught air

7) As the pulse width increases, the range resolution P143 Report

Improves

Deterorates

is unaffected

8) To keep the heat dissipation constant for any increase in p.r.f. Report

Pulse width is to be increased

Peak power is to be maintained constant

Duty cycle is to be maintained constant

9) Cells of heavy precipitation are shown as Report

Dark holes

Bright holes

(i) with bright paint

10) C.r.t. screen coated with a long-persistence phosphor is not very useful because Report

It requires a high shielding

It is less efficient

All the above

11) In d.v.s.l Report

A mesh is mounted

Electron arrive at mesh from two sources

All the above

12) For a given diameter & wavelength, the flat plate antenna has Report

Higher gain

Wider beam

Large side lobe point

13) Radome Report

Is transparent to X-band signal

Provides protection to scanner

All the above

14) Radome Report

Is covered Honey comb structure

Is made of plastic material reinforced with fiber glass

ATA

15) Stabilization holds the beam in Report

Horizontal plane

At a constant elevation with respect to horizontal

(ii) and constant elevation is set by using tilt control

16) In contour operation signals which ______ are invented Report

corresponds to predetermined level

exceeds the predetermined level

none of the above

17) The narrower the width of the paint Report

smaller the turbulence

Greater the turbulence

Medium level turbulence

18) Contour presentation is also known as Report

Iso - Iso

Iso - Ego

Iso - Echo

19) The aim of s.t.c. is to make the Report

receiver gain constant

receiver output variable

receiver output independent of range

20) In s.t.c., the receiver gain Report

is maximum at zero range

decrease with time

is minimum at zero range

EASA Questions Radio Nav. Set 4

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7