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Electronics and Communication Engineering - Communication Systems

Exercise : Communication Systems - Section 16
21.
If D is diagonal and F is focal length, lens angle θ is
θ = tan-1 (D/F)
θ = 2 tan-1 (D/F)
θ = tan-1 (D/2F)
θ = 2 tan-1 (D/2F)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Present day stereophonic systems have
only CD playback facility
only tape playback facility
both CD and tape playback facilities along with radio
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
RF choke used for suppressing interference in TV is generally
honey comb wound coil
iron core coil
single layer coil
multilayer coil
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Indicate the false statement: To combat noise
reduce signalling rate
increase transmitted power
use redundancy
increase channel bandwidth
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Audio and video signals are called modulating waves.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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