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Analog Pulse Modulation – 1 – 3

11. The signal-to-quantisation noise ratio in a PCM system depends upon :

(a) Sampling rate
(b) Number of quantisation levels
(c) Message signal bandwidth
(d) None of the above

ANSWER

EXPLANATION

12. For transmission the normal speech signal, the PCM channel needs a band width of …. kHz.

(a) 2
(b) 4
(c) 8
(d) 64

ANSWER

EXPLANATION

13. …… is the main advantage of PCM.

(a) Lower noise
(b) Lower power
(c) Lower bandwidth
(d) None of the above

ANSWER

EXPLANATION

14. For the transmission of normal speech, the PCM channel needs a bandwidth of …. kHz

(a) 2
(b) 4
(c) 16
(d) 64

ANSWER

EXPLANATION

15. ….. is the main advantage of PCM system.

(a) Lower noise
(b) Lower bandwidth
(c) Lower power
(d) Any of the above

ANSWER

EXPLANATION

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