Computer Programming MCQs

5739 MCQs  (Page 234 of 574)

Attempt Computer Programming MCQs Quiz
The encapsulation of transistor is necessary for__________?
A. Preventing radio interference
B. Preventing photo-emission effects
C. Avoiding loss of free electrons
D. Mechanical ruggedness
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In all base driver amplifiers__________?
A. Ac collector voltage is 180° out of phase with ac base voltage
B. Ac emitter voltage is 180° out of phase with ac base voltage
C. Ac collector voltage is in phase with ac base voltage
D. None of the above
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Over modulation results in ______________?
A. Weakening of the signal
B. Excessive carrier power
C. Distortion
D. None of the above
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Overmodulation (amplitude) occurs when signal amplitude is _____________ carrier amplitude?
A. Equal to
B. Greater than
C. Less than
D. None of the above
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At 100% modulation, the power in each sideband is _____________ of that of carrier?
A. 50%
B. 40%
C. 60%
D. 25%
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In amplitude modulation, bandwidth is ____________ the audio signal frequency?
A. Thrice
B. Four times
C. Twice
D. None of the above
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Modulation is done in____________________
A. Transmitter
B. Radio receiver
C. Between transmitter and radio receiver
D. None of the above
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In pakistan, ______________ modulation is used for radio transmission?
A. Frequency
B. Amplitude
C. Phase
D. None of the above
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In amplitude modulation, the _____________of carrier is varied according to the strength of the signal?
A. Amplitude
B. Frequency
C. Phase
D. None of the above
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If modulation is 100% then signal amplitude is ____________arrier amplitude?
A. Equal to
B. Greater than
C. Less than
D. None of the above
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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