In the above question, what is the power in sidebands ?
A. 8 kw
B. 6 kw
C. 06 kw
D. 9 kw
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Modulation refers to a low-frequency signal controlling the ________________?
A. Amplitude of the carrier
B. Frequency of the carrier
C. Phase of the carrier
D. May be any of the above
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The major advantage of FM over AM is__________________?
A. Reception is less nosiy
B. Higher carrier frequency
C. Smaller bandwidth
D. Small frequency deviation
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Superhertodyne principle refers to_________________?
A. Using a large number of amplifier stages
B. Using a push-pull circuit
C. Obtaining lower fixed intermediate frequency
D. None of the above
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The superhetrodyne principle provides selectivity at ______________stage?
A. Rf
B. If
C. Audio
D. Before rf
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Most of the amplification in a superhetrodyne receiver occurs at ______________stage?
A. If
B. Rf amplifier
C. Audio amplifier
D. Detector
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If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ________________?
A. Sensitivity
B. Selectivity
C. Distortion
D. Fidelity
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The letters AVC stand for ________________?
A. Audio voltage control
B. Abrupt voltage control
C. Automatic volume control
D. Automatic voltage control
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In superhetrodyne receiver, the input at mixer stage is________________?
A. If and rf
B. Rf and af
C. If and af
D. Rf and local oscillator signal
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When the modulating signal controls the frequency of the carrier, we get______________?
A. Phase modulation
B. Amplitude modulation
C. Frequency modulation
D. May be any one of the above
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Word of the Day
15 Sep
Preferential
of or involving preference or partiality; constituting a favour or privilege.
ترجیحی، رعاعیتی، ترجیح پانےوالا

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