Radio Receivers To prevent overloading of the IF amplifier in a receiver, one should use Squelch Double conversion Variable selectivity Variable sensitivity Squelch Double conversion Variable selectivity Variable sensitivity ANSWER DOWNLOAD EXAMIANS APP
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 permit easier tracking Because otherwise an intermediate frequency could not be produced To help the image frequency rejection To allow adequate frequency coverage without switching To permit easier tracking Because otherwise an intermediate frequency could not be produced To help the image frequency rejection ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The controlled oscillator synthesizer is sometimes preferred over the direct one because It is a simpler piece of equipment It does not require crystal oscillator It is relatively free of spurious frequency Its frequency stability is better It is a simpler piece of equipment It does not require crystal oscillator It is relatively free of spurious frequency Its frequency stability is better ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers If the intermediate frequency is very high (indicate false statement) 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 The selectivity will be poor Image frequency rejection is very good The local oscillator need not be extremely stable ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate which of the following statements about the advantages of the phase discriminator over the slope detector is false: Fewer tuned circuits Better linearity Much easier alignment Greater limiting Fewer tuned circuits Better linearity Much easier alignment Greater limiting ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers One of the following cannot be used to demodulate SSB: Diode Balance modulator Product detector Complete phase-shift generator Bipolar transistor balanced modulator Diode Balance modulator Product detector Complete phase-shift generator Bipolar transistor balanced modulator ANSWER DOWNLOAD EXAMIANS APP
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