- Communication Systems - Section 1
- Communication Systems - Section 2
- Communication Systems - Section 3
- Communication Systems - Section 4
- Communication Systems - Section 5
- Communication Systems - Section 6
- Communication Systems - Section 7
- Communication Systems - Section 8
- Communication Systems - Section 9
- Communication Systems - Section 10
- Communication Systems - Section 11
- Communication Systems - Section 12
- Communication Systems - Section 13
- Communication Systems - Section 14
- Communication Systems - Section 15
- Communication Systems - Section 16
- Communication Systems - Section 17
- Communication Systems - Section 18
- Communication Systems - Section 19
- Communication Systems - Section 20
- Communication Systems - Section 21
- Communication Systems - Section 22
- Communication Systems - Section 23
- Communication Systems - Section 24
- Communication Systems - Section 25
Communication Systems
A 8
B 16
C 3
D 32
ANS:C - 3
Bandwidth for PCM system
= 2nN fm Hz for N >> 1, n >> 1
where n is no. of channel, N is no. of bit.
B1 = 2n N1 fm 
B2 = 2n N2 fm
2N1 = 4  N1 = log24 N1 = 2
2N2 = 64 N2 = log264 6
 .
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