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

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Q. Sound wave travels as

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Q. FM signal can be generated by

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

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Q. The Shannon-Hartley law

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Q. In radar PRF depends on maximum range.

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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

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

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

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Q. Brownian motion is

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Q. In a TV studio the illuminance is about

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Q. MEWS stands for

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Q. Top loading in an antenna increases

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

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

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

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Q. In pulse code modulation when the maximum frequency in the signal is fmax the bandwidth required will be

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Q. The oscillator frequency is set for

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Q. The main advantage of DM over PCM is

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Q. In filter system of sideband suppression the advantage of using mechanical filter is

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