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Electronics and Communication Engineering - Radio Receivers

Exercise : Radio Receivers - Section 1
41.
The selectivity of a radio receiver is
its ability to reject adjacent unwanted signals
its ability to amplify weak signals
the frequency at which it gives maximum amplification to signal.
its ability to suppress noise.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
If the intermediate frequency of a superheterodyne receiver falls within the tuning range of the receiver
Unsuitability will occur
Heterodyne whistles will be heard
Tuning to the frequency band immediately adjacent to the intermediate frequency will become impossible
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
EM 84 tube is used in radio receivers as
audio amplifier
RF amplifier
full wave rectifier
magic eye
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
Which of the following statement about receivers is false?
Double conversion is used to improve image rejection
Double conversion is used to improve selectivity
Variable sensitivity is used to improve selectivity
Variable sensitivity is used to eliminate selective fading
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Modulated carrier power in FM
increases with modulating signal power
decreases with modulating signal power
is independent of the modulating signal power
none
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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