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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 13
41.
An FM signal is modulated by an 8 kHz sine wave and has maximum and minimum frequencies of 100.05 MHz and 99.95 MHz respectively. Its deviation frequency is
100 kHz
100 MHz
500 kHz
108 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.

Assertion (A): RF tuner is called front end of TV receiver

Reason (R): RF tuner receives the TV signal and selects the required channel.

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.
43.
In TV broadcast, UHF range is
606 - 790 MHz
100 - 150 MHz
41 - 68 MHz
174 - 230 MHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
The most commonly used microphone for public address systems is
carbon
crystal
moving coil
condenser
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Pre-emphasis and De-emphasis is done by using R-C circuit.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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