Radio Receivers Three-point tracking is achieved with Double spotting The padder capacitor Double conversion Variable selectivity Double spotting The padder capacitor Double conversion Variable selectivity ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers If the intermediate frequency is very high (indicate false statement) The local oscillator need not be extremely stable Image frequency rejection is very good Tracking will be improved The selectivity will be poor The local oscillator need not be extremely stable Image frequency rejection is very good Tracking will be improved The selectivity will be poor ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a radio receiver with simple AGC 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 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 ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate which of the following circuits could not demodulate SSB: BFO Balance modulator Product modulator Phase discriminator BFO Balance modulator Product modulator Phase discriminator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The frequency generated by each decade in a direct frequency synthesizer is much higher than the frequency shown; this is done to Reduce the number of decades Reduce the spurious frequency problem Increase the frequency stability of the synthesizer Reduce the number of crystals required Reduce the number of decades Reduce the spurious frequency problem Increase the frequency stability of the synthesizer Reduce the number of crystals required ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement in connection with communications receivers. A product demodulator could be used for the reception of Morse code. The noise limiter cuts off the receiver’s output during a noise pulse. Double conversion is used to improve image rejection Variable sensitivity is used to eliminate selective fading A product demodulator could be used for the reception of Morse code. The noise limiter cuts off the receiver’s output during a noise pulse. Double conversion is used to improve image rejection Variable sensitivity is used to eliminate selective fading ANSWER DOWNLOAD EXAMIANS APP
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