Exercise: Radio Receivers

Questions for: Radio Receivers

The household radio receiver uses
A:
synchronous
B:
envelope detector
C:
radio detector
D:
none of the above
Answer: B
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In a transistor receiver, the use of FET as the first stage amplifier is likely to
A:
improve selectivity of the receiver
B:
improve the effectiveness of the AGC
C:
reduce the effect of negative peak clipping
D:
reduce the effect of noise at all frequencies
Answer: C
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Three point tracking can be achieved with
A:
gang condenser
B:
variable selectivity
C:
paddar capacitor
D:
any of the above
Answer: B
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Double spotting in a receiver is due to
A:
poor sensitivity of RF amplifier
B:
high gain of IF amplifier
C:
inadequate image frequency rejection
D:
all of the above
Answer: C
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A FM signal with modulation index Mf is passed through a frequency doubler. The wave in the output of the doubler will have modulation index of
A:
Mf
B:
Mf/2
C:
2Mf
D:
UMf
Answer: C
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