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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 18
21.
For TV broadcast, picture signal is modulated in
SSB
VSB
FM
AM
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.

Assertion (A): Stubs, directional couplers and baluns are very commonly used in communication systems

Reason (R): Characteristic impedance of a line is an important parameter.

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.
23.
Audio frequency range lies between
20 Hz and 20 kHz
20 kHz and 20 MHz
2 MHz and 20 MHz
20 MHz and 200 MHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.

Assertion (A): SSB and ISB receivers have good S/N ratio

Reason (R): SSB and ISB receivers have good suppression of adjacent channels.

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.
25.
De-emphasis circuit is used
to attenuate high frequencies
to attenuate low frequencies
to attenuate mid-band frequencies
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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