Q. How much is contributed by each bit in the code word of a PCM system under uniform and symmetric quantization to the signal to noise ratio?

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Q. Noise which assumes great importance at high frequencies is

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Q. Which one is Analog Continuous modulation technique?

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Q. AM transmitter employing low level modulation

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Q. As the area of a public meeting increases the amplifier power output required increases.

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Q. In VHS format width of audio track is

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Q. In a plate modulated class C amplifier, the peak supply voltage is V. The maximum plate-cathode voltage can be

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Q. In a single sideband suppressed carrier AM system, the modulation index is changed from 0 to 1, the power content of the signal

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Q. Neper is

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Q. Modulation system used for video-modulation in television broadcast is

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Q. The highest modulation frequencies typically used in FM broadcast is

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Q. The intermediate frequency of a superheterodyne receiver is 450 kHz. If it is tuned to 1200 kHz, the image frequency will be

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Q. In the above case the modulation index will be

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Q. Which of the following statement regarding single-sideband (SSB) transmission is not correct?

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Q. If sound intensity is 8 W/m², the dB level of this sound is about

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Q. The distance of a direct broadcasting satellite from earth's surface is about

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Q. Which of the following microphones has an inbuilt amplifier?

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Q. UHF range is

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Q. In asynchronous TDM, for n signal sources, each frame contains m slots, where m is usually

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Q. For demodulating PCM; it is first converted into

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