Radio Receivers
The frequency generated by each decade in a direct frequency synthesizer is much higher than the frequency shown; this is done to

Reduce the spurious frequency problem
Reduce the number of decades
Increase the frequency stability of the synthesizer
Reduce the number of crystals required

ANSWER DOWNLOAD EXAMIANS APP

Radio Receivers
Indicate the false statement in connection with communications receivers.

A product demodulator could be used for the reception of Morse code.
Double conversion is used to improve image rejection
Variable sensitivity is used to eliminate selective fading
The noise limiter cuts off the receiver’s output during a noise pulse.

ANSWER DOWNLOAD EXAMIANS APP