Exercise: Communications

Questions for: Communications

The demodulator recovers the audio signal from the IF output.
A:
True
B:
False
C:
D:
Answer: A
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A balanced modulator is used in standard AM to obtain the sum and difference frequencies.
A:
True
B:
False
C:
D:
Answer: B
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The IF of an FM receiver operates at a center frequency of 455 kHz.
A:
True
B:
False
C:
D:
Answer: B
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The mixer takes the RF signal along with the audio signal to produce the IF signal.
A:
True
B:
False
C:
D:
Answer: B
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The purpose of the balanced modulator is to remove the carrier frequency.
A:
True
B:
False
C:
D:
Answer: A
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