Question60:-If the modulating signal has frequency 10 KHz, the phase modulated
signal with a carrier of
1 MHz can be

A: Asin(2110%t) Bcos(2nt)

B :-Bcos(21105¢+ Asin(2110%))

C:- Beos(2n10%)+Asin(2xé)

:- 8:05(71051-/.4(27103ಬ))

Correct Answer:- Option-B

Question61:-Given two band-limited signals » (0) and *. (t) with band limits 3 KHz
and 5 KHz respectively. What is the Nyquist rate for sampling the convolution of the
51041215, ° ({)* (t) ?

A:-10 KHz

B:-30 KHz

C:-16 KHz

D:-6 KHz

Correct Answer:- Option-D

Question62:-What is the minimum sampling frequency for a band pass signal with
upper limit 10 KHz and lower limit 6 KHz, as per the band pass sampling theorem ?

A:-12 KHz

B:-10 KHz

C:-20 KHz

D:-8 KHz

Correct Answer:- Option-B

Question63:-For a full scale sinusoid with peak magnitude 5 volts, what is the signal
to quantization noise power, with a quantization signal step-size 2, in PCM ?

A:-37.5
B:-12.5
C:-75
D:-25
Correct Answer:- Option-A
Question64:-For a lossless channel, the channel matrix has
A:-All elements 1s
B:-Only one non-zero element in each row
C:-Only one non-zero element in each column
D:-Diagonal elements zero
Correct Answer:- Option-C

Question65:-A source generates three symbols with probabilities 0.6, 0.2 and 0.2 at
a rate of 4000 symbols per second. If the source is generating these symbols