Radio Receivers A receiver has poor IF selectivity. It will therefore also have poor Blocking Diversion reception Double-spotting Sensitivity Blocking Diversion reception Double-spotting Sensitivity ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement. The superheterodyne receiver replaced the TRF receiver because the latter suffered from Instability Inadequate selectivity at high frequencies Gain variation over the frequency coverage range Insufficient gain and sensitivity Instability Inadequate selectivity at high frequencies Gain variation over the frequency coverage range Insufficient gain and 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 permit easier tracking To help the image frequency rejection Because otherwise an intermediate frequency could not be produced To allow adequate frequency coverage without switching To permit easier tracking To help the image frequency rejection Because otherwise an intermediate frequency could not be produced To allow adequate frequency coverage without switching ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Three-point tracking is achieved with The padder capacitor Variable selectivity Double spotting Double conversion The padder capacitor Variable selectivity Double spotting Double conversion ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The typical squelch circuit cuts off An IF amplifier when the AGC is maximum RF interference when the signal is weak An IF amplifier when the AGC is minimum an audio amplifier when the carrier is absent An IF amplifier when the AGC is maximum RF interference when the signal is weak An IF amplifier when the AGC is minimum an audio amplifier when the carrier is absent ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Show which of the following statements about the amplitude limiter is untrue: The output must be tuned The circuit is always biased in class C, by virtue of the leak-type bias. Leak-type bias must be used When the input increases past the threshold of the limiting, the gain decreases to keep the output constant. The output must be tuned The circuit is always biased in class C, by virtue of the leak-type bias. Leak-type bias must be used When the input increases past the threshold of the limiting, the gain decreases to keep the output constant. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS