Radio Receivers The controlled oscillator synthesizer is sometimes preferred over the direct one because It does not require crystal oscillator Its frequency stability is better It is a simpler piece of equipment It is relatively free of spurious frequency It does not require crystal oscillator Its frequency stability is better It is a simpler piece of equipment It is relatively free of spurious frequency ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is 750 kHz 1650 kHz 900 kHz 2100 kHz 750 kHz 1650 kHz 900 kHz 2100 kHz ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The local oscillator of a broadcast receiver is tuned to a frequency higher than the incoming frequency Because otherwise an intermediate frequency could not be produced To allow adequate frequency coverage without switching To help the image frequency rejection To permit easier tracking Because otherwise an intermediate frequency could not be produced To allow adequate frequency coverage without switching To help the image frequency rejection To permit easier tracking ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Show which of the following statements about the amplitude limiter is untrue: The circuit is always biased in class C, by virtue of the leak-type bias. The output must be tuned 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 circuit is always biased in class C, by virtue of the leak-type bias. The output must be tuned When the input increases past the threshold of the limiting, the gain decreases to keep the output constant. Leak-type bias must be used ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers A receiver has poor IF selectivity. It will therefore also have poor Diversion reception Blocking Double-spotting Sensitivity Diversion reception Blocking Double-spotting Sensitivity ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS