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Electronics and Communication Engineering - Radio Receivers

Exercise : Radio Receivers - Section 1
31.
In a radio receiver, if the intermediate frequency is too low
Image-frequency rejection will improve
Selectivity will be too sharp
The frequency selectivity of the local oscillator will have to be lowered
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
FM amplifier in a superheterodyne receiver
increases selectivity
suppresses noise
provides improved tracking
improves the rejection of the image frequency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Padders are used in a receiver to
discard the carrier
facilitate tracking
filter the input signal
suppress noise
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
In a radio receiver, the local oscillator is tuned to a frequency
lower than the incoming frequency
higher than the incoming frequency
equal to incoming frequency
any of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Which of the following oscillator is generally not used at VHF?
Colpitts oscillator
Clapp oscillator
Armstrong oscillator
Ultra Audio oscillator
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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