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Questions and Answers
Radio receivers must provide selectivity and sensitivity to allow full recovery of the original signal.
True
Selectivity is the communication receiver's ability to identify and select any signal from others present in the frequency spectrum.
False
Sensitivity allows communication receivers to pick up weak signals and provide sufficient amplification to recover the modulating signal.
True
Selectivity in a receiver is obtained using uncontrolled circuits such as LC-tuned circuits.
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The ideal bandwidth of the selectivity curve must be narrow enough to eliminate or attenuate signals on adjacent frequencies.
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Figure 1 is a selectivity curve of an LC-tuned ______.
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In a receiver, selectivity is obtained using tuned circuits such as ______.
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The transmitted signal in radio communication systems becomes weak when it reaches the ______.
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The ideal bandwidth (BW) of the selectivity curve must be wide enough to pass the signal and its ______.
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Selectivity is the communication receiver’s ability to identify and select a desired signal from others present in the frequency ______.
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