Q. In a single tone AM the power of carrier is P and modulation index is m. The powers of each of the two side bands are

View solution

Q. If F(ω) is Fourier transform of f(t), then the Fourier transform of f(t) cos ωct is

View solution

Q. In a TV receiver the raster is normal but there is no sound and quality of picture is poor. The defective part is

View solution

Q. Foster Seeley discriminator uses a

View solution

Q. Which of the following statement about modulation is correct?

View solution

Q. Sound wave travels as

View solution

Q. FM signal can be generated by

View solution

Q. A planar array radar uses a high gain planar array antenna.

View solution

Q. The Shannon-Hartley law

View solution

Q. In radar PRF depends on maximum range.

View solution

Q. A frequency doubler has an FM signal input at 13 MHz with a deviation of 5 kHz. The output frequency of the carrier will be

View solution

Q. If fh(t) is Hilbert transform of f(t), then Hilbert transform of fh(t) is

View solution

Q. Maximum undistorted power output of a transmitter is obtained when its modulation is __________ percent.

View solution

Q. Brownian motion is

View solution

Q. In a TV studio the illuminance is about

View solution

Q. MEWS stands for

View solution

Q. Top loading in an antenna increases

View solution

Q. In a radar, the return echo arrives after the allocated pulse interval. Then

View solution

Q. Which of the following is Doppler effect not used?

View solution

Q. If the AF voltage is raised to 10 V, while the AM is dropped to 200 Hz, what is the deviation?

View solution