Electrical Engineering MCQs

Page No. 118

In the above question, what is the power in sidebands ?


a 8 kW

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b6 kW

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c06 kW

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d9 kW

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View Answer 06 kW

Modulation refers to a low-frequency signal controlling the ________________?


aAmplitude of the carrier

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b Frequency of the carrier

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cPhase of the carrier

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dMay be any of the above

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The major advantage of FM over AM is__________________?


aReception is less noisy

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bHigher carrier frequency

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cSmaller bandwidth

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dSmall frequency deviation

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Superhertodyne principle refers to_________________?


aUsing a large number of amplifier stages

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bUsing a push-pull circuit

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cObtaining lower fixed intermediate frequency

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dNone of the above

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The superhetrodyne principle provides selectivity at ______________stage?


aRF

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bIF

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caudio

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d Before RF

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View Answer IF

Most of the amplification in a superhetrodyne receiver occurs at ______________stage?


aIF

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b RF amplifier

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cAudio amplifier

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dDetector

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View Answer IF

If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ________________?


aSensitivity

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bSelectivity

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cDistortion

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dFidelity

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View Answer Fidelity

The letters AVC stand for ________________?


a Audio voltage control

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bAbrupt voltage control

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cAutomatic volume control

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dAutomatic voltage control

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In superhetrodyne receiver, the input at mixer stage is________________?


aIF and RF

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b RF and AF

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cIF and AF

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dRF and local oscillator signal

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When the modulating signal controls the frequency of the carrier, we get______________?


aPhase modulation

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b Amplitude modulation

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cFrequency modulation

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dMay be any one of the above

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View Answer Frequency modulation

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