Radio Receivers A low ratio of the ac to the dc load impedance of a diode detector results in Negative-peak clipping Poor AGC operation Poor AF response Diagonal clipping Negative-peak clipping Poor AGC operation Poor AF response Diagonal clipping ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The typical squelch circuit cuts off An IF amplifier when the AGC is maximum An IF amplifier when the AGC is minimum RF interference when the signal is weak an audio amplifier when the carrier is absent An IF amplifier when the AGC is maximum An IF amplifier when the AGC is minimum RF interference when the signal is weak an audio amplifier when the carrier is absent ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a ratio detector stabilization against signal strength variations is provided the linearity is worse than in phase discriminator the output is twice that obtainable from a similar phase discriminator the circuit is the same as in a discriminator, except that the diodes are reversed stabilization against signal strength variations is provided the linearity is worse than in phase discriminator the output is twice that obtainable from a similar phase discriminator the circuit is the same as in a discriminator, except that the diodes are reversed 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 Indicate which of the following statements about the advantages of the phase discriminator over the slope detector is false: Much easier alignment Better linearity Fewer tuned circuits Greater limiting Much easier alignment Better linearity Fewer tuned circuits Greater limiting ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Three-point tracking is achieved with The padder capacitor Variable selectivity Double conversion Double spotting The padder capacitor Variable selectivity Double conversion Double spotting ANSWER DOWNLOAD EXAMIANS APP
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