Q. The noise generated by a resistor depends upon

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Q. In a superheterodyne receiver

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Q. The function of an AM detector circuit is to

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Q. Which of the following should be used in order to prevent overloading or the last IF amplifier in a receiver?

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Q. Most popular IF for receivers tuning to 540 to 1650 kHz is

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Q. In superheterodyne receivers, the local oscillator is used to

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Q. Which of the following is same in AM and FM receivers?

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Q. A notch filter is sometimes used in communication receivers to

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Q. Which one of the following is not a useful quantity for comparing the noise performance of receivers?

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Q. Which of the following statement about the amplitude limiter is not valid?

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Q. In a radio receiver, if the intermediate frequency is too low

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Q. FM amplifier in a superheterodyne receiver

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Q. Padders are used in a receiver to

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Q. In a radio receiver, the local oscillator is tuned to a frequency

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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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