Q. An arbitrary signal m (t) has zero average value and it is bandlimited to 3.2 kHz. It is sampled at the rate of 8 K samples/S. The samples are passed through an ideal bandpass filter with centre frequency of 32 kHz and bandwidth of 6.4 kHz. The output of band pass filter is

View solution

Q. The purpose of incorporating a pre-selector stage in a receiver is to

View solution

Q. Vividh Bharati programme is transmitted in

View solution

Q. The image frequency of a superheterodyne receiver is

View solution

Q. Noise limiter is provided on AM receivers to

View solution

Q. A low ratio of the A.C. load impedance of a diode detector results in

View solution

Q. A trimmer is basically a

View solution

Q. In a radio receiver

View solution

Q. The sensitivity of a superheterodyne receiver is determined by

View solution

Q. In a radio receiver

View solution

Q. In radio receiver, the maximum contribution to noise is from

View solution

Q. Power spectral density of white noise

View solution

Q. In a FM waveform, the side bands are spaced at intervals equal to

View solution

Q. In a transistor receiver, the use of FET as the first stage amplifier is likely to

View solution

Q. The household radio receiver uses

View solution

Q. The source of which of the following noise is different from that of the remaining?

View solution

Q. A receiver having poor IF selectivity will also have poor

View solution

Q. Statement 1:
Diode is the most common device used for demodulation.

Statement 2:
A discriminator is a FM detector.

View solution

Q. In a receiver, which of the following device has RF input but IF output?

View solution

Q. The IF stage of a receiver employs

View solution