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Radio Receivers
An AM receiver uses a diode detector for demodulation. This enables it satisfactorily to receive
Single-sideband, full-carrier
ISB
Single-sideband, suppressed-carrier
Single-sideband, reduced-carrier
Single-sideband, full-carrier
ISB
Single-sideband, suppressed-carrier
Single-sideband, reduced-carrier
Answer
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Related Question
Radio Receivers
The local oscillator of a broadcast receiver is tuned to a frequency higher than the incoming frequency
To allow adequate frequency coverage without switching
To help the image frequency rejection
To permit easier tracking
Because otherwise an intermediate frequency could not be produced
To allow adequate frequency coverage without switching
To help the image frequency rejection
To permit easier tracking
Because otherwise an intermediate frequency could not be produced
Answer
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Radio Receivers
If a FET is used as the first AF amplifier in a transistor receiver, this will have the effect of
Reducing the effect of negative-peak clipping
Improving the effectiveness of the AGC
Improving the selectivity of the receiver
Reducing the effect of noise at low modulation depths
Reducing the effect of negative-peak clipping
Improving the effectiveness of the AGC
Improving the selectivity of the receiver
Reducing the effect of noise at low modulation depths
Answer
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Radio Receivers
If the intermediate frequency is very high (indicate false statement)
The selectivity will be poor
Image frequency rejection is very good
The local oscillator need not be extremely stable
Tracking will be improved
The selectivity will be poor
Image frequency rejection is very good
The local oscillator need not be extremely stable
Tracking will be improved
Answer
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Radio Receivers
A superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is
1650 kHz
750 kHz
900 kHz
2100 kHz
1650 kHz
750 kHz
900 kHz
2100 kHz
Answer
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Radio Receivers
The frequency generated by each decade in a direct frequency synthesizer is much higher than the frequency shown; this is done to
Reduce the number of crystals required
Reduce the spurious frequency problem
Increase the frequency stability of the synthesizer
Reduce the number of decades
Reduce the number of crystals required
Reduce the spurious frequency problem
Increase the frequency stability of the synthesizer
Reduce the number of decades
Answer
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