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Electronics and Communication Engineering - Radio Receivers

Exercise : Radio Receivers - Section 2
6.
The sensitivity of a superheterodyne receiver is determined by
the gain IF amplifier
the gain of RF amplifier
the noise figure
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
In a radio receiver
the local oscillator frequency is made higher than the incoming signal frequency
the local oscillator frequency is made lower than the incoming signal frequency
the local oscillator frequency is made equal to the incoming signal frequency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
In radio receiver, the maximum contribution to noise is from
mixer stage
power supply
power amplifier
equally from above three
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Power spectral density of white noise
is constant with frequency
increases with frequency
decreases with frequency
none
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
In a FM waveform, the side bands are spaced at intervals equal to
four times the modulating frequency
twice the modulating frequency
half the modulating frequency
modulating frequency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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