Computer Programming MCQs

5739 MCQs  (Page 505 of 574)

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A transformer coupled class A power amplifier has a load of 100 O on the secondary. If the turn ratio is 10:1, what is the value of load appearing on the primary?
A. 5 ko
B. 20 ko
C. 100 ko
D. 10 ko
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The most costly coupling is _______________ coupling?
A. Rc
B. Direct
C. Impedance
D. Transformer
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The disadvantage of impedance matching is that it _______________?
A. Gives distorted output
B. Gives low power output
C. Requires a transformer
D. None of the above
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An AF amplifier is shielded to ________________?
A. Keep the amplifier cool
B. Protect from rusting
C. Prevent induction due to stray magnetic fields
D. None of the above
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The output stage of a multistage amplifier is also called _________________-?
A. Mixer stage
B. Power stage
C. Detector stage
D. F stage
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A class A power amplifier uses _________________?
A. Two transistors
B. Three transistors
C. One transistor
D. None of the above
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Class C amplifiers are used as ___________________?
A. Af amplifiers
B. Detectors
A. Amplifiers
C. None of the above
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Class_____________ power amplifier has the highest collector efficiency ?
A. C
B. A
C. B
D. Ab
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The maximum efficiency of resistance loaded class A power amplifier is _________________?
A. 5%
B. 50%
C. 30%
D. 25%
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________________ coupling is generally employed in power amplifiers?
A. Transformer
B. Rc
C. Direct
D. Impedance
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Word of the Day
16 Jul
Volatile
(of a substance) easily evaporated at normal temperatures.
بدلتے مزاج والا، کافور صفت

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