Advance Communication System MCQ Questions and Answers
1. A passive Satellite :
Answer : B
2. It the critical frequency of 30 MHz is departing at an angle of 60°, then MuF is :
Answer : B
3. In a RADAR system which of the following is used for transmitter output tubes?
Answer : B
4. Cellular telephone services are also known as :
Answer : A
5. Free space intrinsic impedance is :
Answer : C
Advance Communication System MCQ
6. Which of the following expression is correct ?
Answer : A
7. The signal at the output of an AM modulator is given by eAM(t)=5.3[1+0.64Sin6280t] Sin106tV. The amplitude of carrier signal is :
Answer : A
8. A carrier is simultaneously modulated by two Sine waves with modulation index 0.3 and 0.4 the total modulation index is :
Answer : B
9. The distance of synchronous satellite from earth surface is :
Answer : C
10. A magnetron is a :
Answer : A
Advance Communication System MCQ
11. A cavity can be considered as :
Answer : A
12. In a RADAR System PRF stands for :
Answer : C
13. Energy can be propagated in waveguide by :
Answer : C
14. Which of the following exibits negative resistance :
Answer : D
15. Gauss’s laws of eletro statics is represented by the following expression :
Answer : A
Advance Communication System MCQ
16. What is the frequency range of C-band?
Answer : B
17. What is the reason for carrying multiple transponders in a satellite?
Answer : A
18. Which technique uses two different antennas to reduce traffic on the same frequency?
Answer : B
19. What provides the sufficient drive to the final power amplifier?
Answer : A
20. The lowest frequency used in satellite communications is ______ GHz.
Answer : A
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