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Dear candidates you will find MCQ questions of Communication Engineering here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

Q. 1) If the peak message signal amplitude is half the peak amplitude of the carrier signal, the signal is ______ modulated.

(A) 100%
(B) 2%
(C) 50%
(D) 70%
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Q. 2) A percentage of modulation greater than

(A) 10%
(B) 25%
(C) 50%
(D) 100%
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Q. 3) Single sideband AM systems occupy same bandwidth as of conventional AM systems.

(A) true
(B) false
(C) ---
(D) ---
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Q. 4) How is the performance of SSB AM systems in fading channels?

(A) poor
(B) best
(C) good
(D) average
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Q. 5) Which of the following is a disadvantage of tone-in-band SSB system?

(A) high bandwidth
(B) bad adjacent channel protection
(C) effects of multipath
(D) generation and reception of signal is complicated
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Q. 6) Circular polarization involves critical alignment between transmitting and receiving antenna.

(A) true
(B) false
(C) ---
(D) ---
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Q. 7) VSB modulation is used in televisions because it avoids phase distortion at low frequencies.

(A) true
(B) false
(C) ---
(D) ---
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Q. 8) A duplex arrangement use separate frequencies for transmission

(A) true
(B) false
(C) ---
(D) ---
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Q. 9) Phase array radar can track many targets together.

(A) true
(B) false
(C) ---
(D) ---
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Q. 10) The upper and lower sideband frequencies for 5KHz amplitude modulation with a 30KHz carrier frequency will be?

(A) 35khz and 25khz
(B) 34khz and 24khz
(C) 25khz and 35khz
(D) 0.35khz and 0.25khz
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