Q. In amplitude modulation, which of the following varies?

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Q. You have 5 information signals and only one transmitter. What technique will help in transmitting all the 5 signals?

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Q. What type of multiplexing is used in mobile phones?

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Q. Which one of the following is not true with respect to amplitude modulation?

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Q. What type of multiplexing is used in serial buses?

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Q. Cps is the unit of what?

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Q. The range of electromagnetic signals encompassing all frequencies is referred to as?

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Q. The distance that the wave travels in one cycle is called as?

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Q. What is the wavelength of a signal with a frequency of 150 Mhz?

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Q. What is the frequency of the EM wave with a wavelength of 12 cm?

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Q. A signal travels a distance of 75 ft in the time it takes to complete 1 cycle. What is its frequency?
(1m = 3.28 ft)

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Q. The maximum peaks of an electromagnetic wave are separated by a distance of 8 inch. What is the frequency?

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Q. SHF Em waves are used in?

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Q. Which one of the following is not a source of infrared radiation?

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Q. Which one of the following is not a reason for not using X-rays in communication?

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Q. The portion of the electromagnetic spectrum occupied by a signal is called ________

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Q. What is the bandwidth of a signal having 928 Mhz and 902 Mhz as its upper and lower frequencies?

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Q. What is the upper frequency of a signal with a bandwidth of 6 Mhz, if the lower frequency limit is 54 Mhz?

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Q. Higher frequencies can have more channels for a particular bandwidth.

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Q. Which organization regulates international EM spectrum division?

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