Q. A paraboloid reflector has mouth diameter D meters, wavelength λ meters. Its beam width φ is equal to

View solution

Q. A balanced modulator circuit uses

View solution

Q. In a television camera tube, scanning of a picture is done

View solution

Q. In communication receivers the fidelity is provided by

View solution

Q. A signal having uniformly distributed amplitude in the interval (- V to + V) is to be encoded using PCM with uniform quantization. The signal to quantization noise ratio is determined by

View solution

Q. Bipolar signalling uses the following bits

View solution

Q. The first geostationary satellite was named

View solution

Q. Typical value of power consumption of TV transmitter is

View solution

Q. In a colour TV receiver, which of the following incorporates colour saturation control?

View solution

Q. Which of the following statement is correct?

View solution

Q. Which of the following is true as regards telephone systems?

View solution

Q. SSB can be generated by

View solution

Q. Which one of the following cannot be used to remove the unwanted sideband in SSB?

View solution

Q. For FM, which of the following statement is not true?

View solution

Q. The orbital period of a geostationary communication satellite is

View solution

Q. Which of the following is not true as regards communication receiver?

View solution

Q. Which of the following is the disadvantage of PDM and PPM?

View solution

Q. Frequency frogging is used in a carrier system to

View solution

Q. TDM

View solution

Q. In a pulsed RADAR, the transmitter is connected to the antenna

View solution