Noise in Communication Systems – 1 – 2

6. ……. Is the unit of loudness.

(a) Decibel
(b) Mel
(c) Phon
(d) Sone

Answer
Answer : (d)

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

7. ….. is the power ratio of one decibel.

(a) 1.26 : 1
(b) 2 : 1
(c) 5 : 1
(d) 10 : 1

Answer
Answer : (a)

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

8. The ionosphere consists of ……. Layer.

(a) Positive charge
(b) Negative charge
(c) Neutral
(d) Any of the other

Answer
Answer : (b)

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

9. The channel capacity is exactly equal to which of the following ?

(a) Noise rate in the channel
(b) Bandwidth of demand
(c) Amount of information per second
(d) None

Answer
Answer : (c)

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

10. Sampling theorem finds application in :

(a) Frequency modulation
(b) Amplitude modulation
(c) PCM
(d) None of the above

Answer
Answer : (c)

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

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