Q. Which of the following oscillator is generally not used at VHF?

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Q. In a superheterodyne receiver, the IF is 455 kHz. If it is tuned to 1200 kHz, the image frequency will be

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Q. The selectivity of most receivers is determined largely by

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Q. In a superheterodyne receiver with an IF of 450 kHz is tuned to a signal at 1200 kHz. The image frequency is

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Q. In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The rejection ratio at 25 MHz will be

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Q. As compared to tuned radio frequency receivers which of the following is the advantage of using superheterodyne receivers?

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Q. The selectivity of a radio receiver is

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Q. If the intermediate frequency of a superheterodyne receiver falls within the tuning range of the receiver

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Q. EM 84 tube is used in radio receivers as

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Q. Which of the following statement about receivers is false?

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Q. Modulated carrier power in FM

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Q. FM receivers using the standard 88 to 108 MHz band use IF of

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Q. Most of the amplification of the received signal is obtained in a superheterodyne receiver from the

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Q. The problem associated with tuned-radio frequency receiver is

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Q. Which of the following noise becomes of great importance at high frequencies?

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Q. Superheterodyne receiver can be used in

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Q. Which of the following statement about the advantage of phase discriminator over the slope detector is false?

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Q. Fidelity of a receiver represents

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Q. Which of the following produces upper and lower side frequencies?

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Q. The passband of the tuned circuits of a radio receiver should be equal to

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