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Quiz 18: Communication Devices and Methods

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In an AM receiver, the AGC signal is sent to the audio amplifiers.
(True False)
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The RF amplifier in both AM and FM receivers is tuned to
(Multiple Choice)
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In an AM receiver, the IF amplifier is designed for a single frequency.
(True False)
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The process of modifying a high frequency carrier by a low frequency signal is called
(Multiple Choice)
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In a single- sideband system there is a carrier and one sideband.
(True False)
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In an AM receiver, the local oscillator generates a 455 kHz frequency.
(True False)
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The output of an AM demodulator is only the audio signal.
(True False)
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In a phase- locked loop, the phase- detector output is an error voltage.
(True False)
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In an FM receiver, recovery of the signal is done with the limiter.
(True False)
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Light is transmitted in a fiber optics system primarily by refraction.
(True False)
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Transmitting signals with fiber optics is faster than using solid wires.
(True False)
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