Q. The most noise resistant modulation system is

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Q. Which of the following is the digital system?

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Q. Which of the following is an oscillator with best frequency stability?

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Q. In FDM systems used for telephone, which modulation scheme is adopted?

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Q. In the above case if another sine wave corresponding to 40% modulation is transmitted simultaneously, the total radiated power will be

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Q. A pre-emphasis circuit

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Q. In orthogonal BFSK, the energy of information bearing term is

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Q. In a tape recorder

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Q. In the spectrum of an FM wave

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Q. The reactance of bypass capacitor in a CE amplifier circuit should be

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Q. In a radar system the solution to blind speed problem is to

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Q. For a FM wave carrier modulating frequency is 10 kHz and bandwidth is 2 MHz. If the modulating signal amplitude is doubled, the bandwidth will be

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Q. In band III of TV, distant reception (beyond line of sight range) is possible due to

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Q. In FM noise can be decreased by a feature that AM does not have

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Q. In case of stabilized reactance modulator AFC system

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Q. Assertion (A): Demodulation of SSB and AM signals is exactly similar

Reason (R): The basic SSB demodulation device is product detector.

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Q. In shot noise

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Q. In VCR, the chrominance signal's frequency is

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Q. Which of the following cannot be used to demodulate SSB?

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Q. The power required to produce a gain of 10 dB over 4 W of original power is __________ watt.

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