Radio Receivers In a radio receiver with simple AGC The audio stage gain is normally controlled by the AGC An increase in signal strength produces more AGC The faster the AGC time constant the more accurate the output The highest AGC voltage is produced The audio stage gain is normally controlled by the AGC An increase in signal strength produces more AGC The faster the AGC time constant the more accurate the output The highest AGC voltage is produced ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers If the intermediate frequency is very high (indicate false statement) Image frequency rejection is very good Tracking will be improved The local oscillator need not be extremely stable The selectivity will be poor Image frequency rejection is very good Tracking will be improved The local oscillator need not be extremely stable The selectivity will be poor ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The controlled oscillator synthesizer is sometimes preferred over the direct one because It is relatively free of spurious frequency It does not require crystal oscillator It is a simpler piece of equipment Its frequency stability is better It is relatively free of spurious frequency It does not require crystal oscillator It is a simpler piece of equipment Its frequency stability is better ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Show which of the following statements about the amplitude limiter is untrue: The output must be tuned The circuit is always biased in class C, by virtue of the leak-type bias. Leak-type bias must be used When the input increases past the threshold of the limiting, the gain decreases to keep the output constant. The output must be tuned The circuit is always biased in class C, by virtue of the leak-type bias. Leak-type bias must be used When the input increases past the threshold of the limiting, the gain decreases to keep the output constant. ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers To prevent overloading of the IF amplifier in a receiver, one should use Variable sensitivity Double conversion Squelch Variable selectivity Variable sensitivity Double conversion Squelch Variable selectivity ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A receiver has poor IF selectivity. It will therefore also have poor Diversion reception Sensitivity Blocking Double-spotting Diversion reception Sensitivity Blocking Double-spotting ANSWER DOWNLOAD EXAMIANS APP
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