Digital Communications – Exercise – 1

1. In Pulse transmitter the ratio of time on to time off is called :

(a)  Efficiency
(b)  Duty cycle
(c)  Base
(d)  Bandwidth

Answer
Answer : (b)
Explanation
No answer description available for this question. Let us discuss.
2. PCM transmission requires _______ Bandwidth than Amplitude transmission.

(a)  More
(b)  Less
(c)  Same
(d)  Negligible

Answer
Answer : (a)
Explanation
No answer description available for this question. Let us discuss.
3. Which one of the following communication system is digital ?

(a)  FM
(b)  AM
(c)  PCM
(d)  PAM

Answer
Answer : (c)
Explanation
No answer description available for this question. Let us discuss.