Q. Which of the following does not cause losses in optical fibre cables?

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Q. The frequency range of 300 kHz to 3000 kHz is known as

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Q. To eliminate ghosts in the picture

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Q. Which of the following statements is correct?

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Q. If output power of a radio receiver is doubled, its volume is increased by __________ dB.

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Q. Human ear can detect sound intensities of the order of

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Q. In Pulse Code Modulation system

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Q. The colour of an object is decided by

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Q. Commercial Frequency deviation of FM is

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Q. For telegraphy the most commonly used modulation system is

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Q. If S represents the carrier synchronization at the receiver and ρ represents the bandwidth efficiency, then the correct statement for the coherent binary PSK is

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Q. An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.

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Q. Circular polarization

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Q. When the length of antenna is a whole wavelength

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Q. Which of the following is an indirect way of generating FM?

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Q. PAM stands for

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Q. The maximum power output of a standard A earth station over the total band allocated to satellite communication is about

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Q. In EM waves, polarization

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Q. In practical commercial FM system, channel bandwidth is

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Q. Skip distance depends on time of day and angle of incidence.

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