Introduction To Satellite Communication – 2 – 5

71. Companding is used :

(a) To protect small signals in PCM from quantizing distortion
(b) To overcome quantize noise in PCM
(c) To overcome impulse noise
(d) None of these

ANSWER
Answer : (a)

EXPLANATION
No answer description available for this question. Let us discuss.

72. FM discriminator changes the FM signal into :

(a) AM signal
(b) FM signal
(c) PM signal
(d) None of these

ANSWER
Answer : (a)

EXPLANATION
No answer description available for this question. Let us discuss.

73. Which of the following system is digital :

(a) Pulse Position Modulation
(b) Pulse Code Modulation
(c) Pulse Width Modulation
(d) Pulse Frequency Modulation

ANSWER
Answer : (c)

EXPLANATION
No answer description available for this question. Let us discuss.

74. In communication system, sampling technique leads to :

(a) Cheaper equipment
(b) Better efficiency
(c) Higher speed of communication
(d) Simpler operation

ANSWER
Answer : (b)

EXPLANATION
No answer description available for this question. Let us discuss.

75. Frequency Shift Keying is basically a method involving :

(a) Amplitude Modulation
(b) Frequency Modulation
(c) Phase Modulation
(d) None of these

ANSWER
Answer : (b)

EXPLANATION
No answer description available for this question. Let us discuss.

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