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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 20
31.

Assertion (A): In FM all power amplifiers can be operated in class C

Reason (R): FM is a constant amplitude modulation system.

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.
32.
In radar system which of the following is called A scope
deflection modulation of CRT
intensity modulation of CRT
computer display
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
In a CD the channel separation is
1 μm
1.6 μm
2.5μm
4 μm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
The unit for luminous energy is
lumens/sec
lumens/m2
lumen-sec
lumen/m
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
The IF bandwidth of a radar receiver is inversely proportional to
pulse interval
pulse width
PRF
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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