Exercise: Communication Systems

Questions for: Communication Systems

Which colour picture tube uses slotted aperture mask?
A:
Trinitron
B:
Shadow mask tube
C:
PIL
D:
None of the above
Answer: C
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FM broadcast lies in which band?
A:
HF
B:
SHF
C:
UHF
D:
VHF
Answer: D
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Which one of the following frequency bands is allocated by ITU (International Telecomm. Union) for DBS - (Direct Broadcast service) also referred as DTH - (Direct to Home service)?
A:
B:
C:
D:
Answer: B
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De-emphasis circuit is used
A:
to attenuate high frequencies
B:
to attenuate low frequencies
C:
to attenuate mid-band frequencies
D:
None of the above
Answer: A
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Assertion (A): SSB and ISB receivers have good S/N ratio

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

A:
Both A and R are correct and R is correct explanation of A
B:
Both A and R are correct but R is not correct explanation of A
C:
A is correct but R is wrong
D:
A is wrong but R is correct
Answer: B
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