IndiaBIX

Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 17
1.
In VCR the luminance signal is recorded by
frequency modulation
phase modulation
amplitude modulation
direct recording
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.

Assertion (A): In digital communication data is coded prior to being transferred.

Reason (R): A number of codes for digital data processing are available.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct but R is wrong
A is wrong but R is correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
In FM modulation pre-emphasis is done for
high frequency components
low frequency components
middle frequency components
both (a) and (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
c(t) and m(t) are used to generate an AM signal. The modulation index of the generated AM signal is 0.5 then the quantity
is
1/2
1/4
1/3
1/8
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
High intermediate frequency in a superheterodyne receiver
higher than
lower than
equal to
not comparable to
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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