Radio Receivers Three-point tracking is achieved with Double spotting Double conversion Variable selectivity The padder capacitor Double spotting Double conversion Variable selectivity The padder capacitor ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A low ratio of the ac to the dc load impedance of a diode detector results in Poor AGC operation Poor AF response Diagonal clipping Negative-peak clipping Poor AGC operation Poor AF response Diagonal clipping Negative-peak clipping ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement in connection with communications receivers. Variable sensitivity is used to eliminate selective fading Double conversion is used to improve image rejection The noise limiter cuts off the receiver’s output during a noise pulse. A product demodulator could be used for the reception of Morse code. Variable sensitivity is used to eliminate selective fading Double conversion is used to improve image rejection The noise limiter cuts off the receiver’s output during a noise pulse. A product demodulator could be used for the reception of Morse code. ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate which of the following circuits could not demodulate SSB: BFO Phase discriminator Product modulator Balance modulator BFO Phase discriminator Product modulator Balance modulator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Show which of the following statements about the amplitude limiter is untrue: Leak-type bias must be used The output must be tuned The circuit is always biased in class C, by virtue of the leak-type bias. When the input increases past the threshold of the limiting, the gain decreases to keep the output constant. Leak-type bias must be used The output must be tuned The circuit is always biased in class C, by virtue of the leak-type bias. When the input increases past the threshold of the limiting, the gain decreases to keep the output constant. ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers When a receiver has good blocking performance, this means that Its detector suffers from burnout It does not suffer from double-spotting It is unaffected by AGC derived from nearby transmissions Its image frequency rejection is poor Its detector suffers from burnout It does not suffer from double-spotting It is unaffected by AGC derived from nearby transmissions Its image frequency rejection is poor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS