Radio Receivers A low ratio of the ac to the dc load impedance of a diode detector results in Poor AF response Diagonal clipping Negative-peak clipping Poor AGC operation Poor AF response Diagonal clipping Negative-peak clipping Poor AGC operation ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The image frequency of a superheterodyne receiver Is created within the receiver itself Is independent of the frequency to which the receiver is tuned Is due to insufficient adjacent channel rejection Is not rejected be the IF tuned circuits Is created within the receiver itself Is independent of the frequency to which the receiver is tuned Is due to insufficient adjacent channel rejection Is not rejected be the IF tuned circuits ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers If the intermediate frequency is very high (indicate false statement) The local oscillator need not be extremely stable Tracking will be improved Image frequency rejection is very good The selectivity will be poor The local oscillator need not be extremely stable Tracking will be improved Image frequency rejection is very good The selectivity will be poor ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers If a FET is used as the first AF amplifier in a transistor receiver, this will have the effect of Reducing the effect of noise at low modulation depths Improving the effectiveness of the AGC Improving the selectivity of the receiver Reducing the effect of negative-peak clipping Reducing the effect of noise at low modulation depths Improving the effectiveness of the AGC Improving the selectivity of the receiver Reducing the effect of negative-peak clipping ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a radio receiver with simple AGC An increase in signal strength produces more AGC The audio stage gain is normally controlled by the AGC The highest AGC voltage is produced The faster the AGC time constant the more accurate the output An increase in signal strength produces more AGC The audio stage gain is normally controlled by the AGC The highest AGC voltage is produced The faster the AGC time constant the more accurate the output 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 Increase the frequency stability of the synthesizer Reduce the spurious frequency problem Reduce the number of decades Reduce the number of crystals required Increase the frequency stability of the synthesizer Reduce the spurious frequency problem Reduce the number of decades Reduce the number of crystals required ANSWER DOWNLOAD EXAMIANS APP
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