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  #2  
15th November 2014, 07:56 AM
Super Moderator
 
Join Date: Apr 2013
Re: AAI ATC Electronics Exam Question Paper

Here is the list of few questions of AAI ATC Electronics Exam Question Paper which you are looking for .

1) Radar is a contraction of word ________ .
2) Radar range is measure in ______ unit.
3) What do you mean by second time around echoes.
4) What do you mean by maximum unambiguous range.
5) What is pulse repetition frequency?
6) What is minimum detectable signal.
7) Which factor affects the maximum radar range.
8) Frequency bands for radar system is _____ .
9) What do you mean by false alarm.
10) What is radar cross section of target.

11) MTI stands for ____ .
12) What do you mean by coherent signal.
13) What do you mean by non coherent signal.
14) What is function of delay line canceller.
15) What is function of phase detector.
16) Why output of MTI stage is bipolar
17) What is function of Tracking radar.
18) Which are the different methods for generating error signal in Tracking radar.
19) Explain function of COHO & STALO in MTI radar.
20) Explain function of duplexer.

21) What is Klystron.
22) Which are the different types of klystron.
23) What is the use of klystron.
24) What do you mean by mode.
25) What is the condition for maximum amplification in klystron.
26) How much is the efficiency of reflex klystron.
27) How much is the efficiency of magnetron.
28) Why magnetron is called cross field device.
29) Which mode is used for oscillation in magnetron.
30) How R. F. field is generated in magnetron.

31) What do you mean by Directivity.
32) What is power gain.
33) What is Effective aperture area
34) What is effective length.
35) What is aperture efficiency.
36) What is radiation resistance.
37) What do you mean by efficiency.
38) What is radiation intensity.
39) Which are the different feeds for paraboloids.
40) Which are the different types of lens antennas.

41) What is the function of radar receiver.
42) What do you mean by noise figure.
43) First stage of radar receiver is _____ .
44) What is the function of mixer.
45) What is the function of duplexer.
46) Which are the different types of duplexers.
47) What is the function of display unit.
48) Which are the important parameters of mixer.
49) What is conversion loss.
50) What is low noise temperature loss.
51) what do you mean by clutter.
52) Which are the different types of clutters.
53) What do you mean by radar cross section .
54) What do you mean by surface clutter.
55) What is angel echoes.
56) What is sea clutter.
57) What is function of synthetic aperture radar
58) What is the function of HF over horizon radar.
59) What is use of synthetic aperture radar.
60) What is use of Hf over horizon radar.
  #3  
24th February 2016, 06:11 PM
Unregistered
Guest
 
Re: AAI ATC Electronics Exam Question Paper

Hello sir, I am Pratap. I am from Jodhpur. I am preparing for AAI ATC exam. Can you help me by providing me with the AAI ATC Electronics Exam Questions?
  #4  
24th February 2016, 06:11 PM
Super Moderator
 
Join Date: May 2012
Re: AAI ATC Electronics Exam Question Paper

As you have asked about the AAI ATC electronics exam questions, check below for the information
1. Shunt*wound Generators (self*excited) used for
a) Boosters
b) Charging Batteries
c) a & b are correct
d) None of the above.-Answer

2. If a generator gives spark on commutator the reason is
a) Overload
b) Armature Shortcircuit
c) a & b are correct
d) None of the above.-Answer

3. The equipment required for protection of transformers.
a) Breather
b) Conservator
c) Emergency release .-Answer
d) Temperature Gauge
e) All of the above

4. Why flux is used for soldering?
a) To remove oxides from the surface to be soldered
b) it is used as a paste
c) without flux cannot solder
d) None of the above.-Answer

5. Empire cloth is used for
a) Overhead lines
b) switches.-Answer
c) Insulating the machines while winding
d) None of the above

6. Thermal efficiency is defined as the ratio of
a) Output Energy / Input Energy.-Answer
b) (Output Energy / Input Energy) x 100
c) Useful heat / Total heat
d) (Useful heat / Total heat) x 100

7. Moving iron attraction type meter used for
a) Measure current in A.C
b) Measure current in D.C.-Answer
c) a & b are correct
d) None of the above

8. Moving coil instrument used in
a) ac only
b) dc only
c) both ac & dc .-Answer
d) None of the above

9. Fluorescent lamp circuit is a
a) Series Circuit
b) Parallel Circuit
c) Combination of series & Parallel Circuit.-Answer
d) None of the above

10. In Fluorescent lamp circuit why choke is used
a) it gives low Voltage impulse for starting lamp
b) It gives high Voltage impulse for starting lamp
c) It prevent the lamp from overvoltages.-Answer
d) it acts as a stabillizer

11. Alternators are rated in
a) KW .-Answer
b) KVA
c) KVAR
d) None of the above

12. The inverse of reluctance is called
a) Permence.-Answer
b) Permittance
c) Saturation
d) None of the above

13. Megger instrument is used for
a) Testing the insulation resistance of the circuit.-Answer
b) Voltage measurement
c) Current measurement
d) None of the above

14 Cinema Projector works in
a) AC
b) DC
c) Both AC & DC .-Answer
d) None of the above

15. Horse power is the unit of
a) Thermal Power
b) Electrical Power
c) Mechanical Power -Answer
d) None of the above

16. Fusing factor ratio is
a) Current rating of fusing element \ Minimum fusing current
b) Minimum fusing current \ Current rating of fusing element-Answer
c) fusing factor not have ratio
d) None of the above

17. The transformer neutral is earthed in the secondary reason is
a) Prevent from over voltages
b) Prevent from over current
c) For testing the phase at any point-Answer
d) None of the above

18. Hot*wire type instrument used in
a) AC only
b) DC only
c) Both AC & DC -Answer
d) None of the above

19. Charging rate for lead acid battery
a) Charging current = capacity \ hour-Answer
b) Charging current = hour \ capacity
c) Charging current = Capacity x Hour
d) None of the above

20. Conductance is a reciprocal of
a) Voltage
b) Current
c) Resistance -Answer
d) None of the above

21. Form factor is defined as the ratio of
a) Average value \ r.m.s value
b) Maximum value \ r.m.s value
c) r.m.s value \ average value-Answer
d) None of the above

22. Maxwell*wien bridge is used for measuring
a) Inductance -Answer
b) Capacitance
c) Voltage
d) None of the above


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