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Electronics and Communication Engineering - Radio Receivers

Exercise : Radio Receivers - Section 2
46.
In a receiver, at higher frequencies
tracking will be improved
tracking will be poor
selectivity will be poor
image frequency rejection will be poor
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Which of the following circuit cannot be used to demodulate SSB?
Phase discriminator
Produce detector
Balanced modulator
Beat frequency oscillator
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
High IF in a superheat receiver
improves selectivity
increases tracking problems
decreases tracking problems
reduces adjacent channel rejection
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
The typical squelch circuit
cuts off an IF amplifier when the AGC is maximum
cuts off an IF amplifier when the AGC is minimum
cuts off an audio amplifier when the carrier is absent
eliminates the RF interference when the signal is weak
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
A communication channel with additive white Gaussian noise, has a bandwidth of 4 kHz and an SNR of 15. Its channel capacity is
1.6 kbps
16 kbps
32 kbps
256 kbps
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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