Computer Programming MCQs

5739 MCQs  (Page 503 of 574)

Attempt Computer Programming MCQs Quiz
When an a.c. signal is applied to an amplifier, ,the operating point moves along_________________?
A. C. load line
B. C. load line
C. Both d.c. and a.c. load lines
D. None of the above
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The point of intersection of d.c. and a.c. load lines is called________________?
A. Saturation point
B. Cut off point
C. Operating point
D. None of the above
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In the zero signal conditions, a transistor sees _____________ load?
A. C.
B. C.
C. Both d.c. and a.c.
D. None of the above
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It is generally desired that a transistor should have_____________________ input impedance?
A. Low
B. Very low
C. High
D. Very high
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The output transformer used in a power amplifier is a _____________ transformer?
A. 1:1 ratio
B. Step-up
C. Step-down
D. None of the above
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If a transistor amplifier draws 2mA when input voltage is 10 V, then its input impedance is ____________?
A. 20 kω
B. 2 kω
C. 10 kω
D. 5 kω
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If the gain versus frequency curve of a transistor amplifier is not flat, then there is distortion ?
A. Amplitude
B. Intermodulation
C. Frequency
D. None of the above
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The pulsating d.c. applied to power amplifier causes________________?
A. Burning of transistor
B. Hum in the circuit
C. Excessive forward voltage
D. None of the above
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What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts ?
A. 20%
B. 80%
C. 40%
D. 50%
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If the power rating of a transistor is 1W and collector current is 100mA, then maximum allowable collector voltage is________________?
A. 1v
B. 100v
C. 20v
D. 10v
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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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