Q. In a wave the electric field lines are vertical. Then the wave is

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Q. In FM and AM the ratio of signal to noise ratio at the detector output least depends upon

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Q. Which of the following can provide two or more voice circuits with the same carrier?

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Q. A linear diode detector uses RC filter. As modulation index increases the maximum permissible value of time constant RC

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Q. In SSB generation, the most commonly used filter is

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Q. The FM broadcast band is from

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Q. If k is Boltzmann's constant, T₀ is standard ambient temperature, δf is bandwidth of receiver, F is noise figure, the minimum receivable signal in a radar receiver is given by

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Q. The purpose of source coding is to

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Q. If a source of information generates messages at the rate of r messages per second and H is entropy, the information rate is

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Q. Consider the following statements about advantages of phase discriminator over slope detector

1. Fewer tuned circuits
2. Greater limiting
3. Better linearity
4. Easy alignment

Which of the above are true?

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Q. In a superheterodyne radio receiver

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Q. The assigned carrier frequency of an FM broadcast station is 96.3 MHz. Its FM signal has a centre frequency of

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Q. Digital television is also called

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Q. The number of spectral component of a cosine wave is

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Q. At FM demodulator output noise power density

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Q. According to CCIR standards, the Vestigial Sideband (VSB)

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Q. Line of sight transmission is used in

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Q. A typical value of insertion loss of SAW filter is

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Q. In phase modulation, the phase deviation is

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Q. The noise generated by a resistor depends upon

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