CS/B.TECH/EIE-New/SEM-7/EI-704A/2013-14
2013
COMMUNICATION THEORY
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.
GROUP – A
(Multiple Choice Type Question)
1. Choose the correct alternatives for any ten of the following: 10 x 1 = 10
i) The positive RF peaks of an AM voltage rise to a maximum value of 12V and drop to a minimum value of 4V. The modulation index assuming single tone modulation is
a) 3 b) 13
c) 14 d) 12 .
ii) PCM generation requires a LPF at the beginning
a) to eliminate aliasing effect
b) to eliminate quantization noise
c) to eliminate decoding noise
d) to eliminate white noise.
