Computer Programming MCQs

5739 MCQs  (Page 269 of 574)

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In a regulated power supply, two similar 15 V zeners are connected in series. The input voltage is 45 V d.c. If each Zener has a maximum current rating of 300 mA, what should be the value of the series resistance ?
A. 10 o
B. 50 o
C. 25 o
D. 40 o
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A power supply has a voltage regulation of 1%. If the no-load voltage is 20 V, what is the full-load voltage ?
A. 8 v
B. 7 v
C. 6 v
D. 2 v
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A relay is ___________switch?
A. A mechanical
B. An electronic
C. An electromechanical
D. None of the above
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The switch that has the fastest speed of operation is ____________ switch?
A. Electronic
B. Mechanical
C. Electromechanical
D. None of the above
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The main disadvantage of a mechanical switch is that it_______________?
A. Is operated mechanically
B. Is costly
C. Has high inertia
D. None of the above
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The maximum speed of electronic switch can be _____________operations per second?
A. 104
B. 10
C. 1000
D. 109
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A switch has ______________?
A. One state
B. Two states
C. Three states
D. None of the above
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The most inexpensive switch is _____________ switch?
A. Electronic
B. Mechanical
C. Electromechanical
D. None of the above
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When a transistor is driven to saturation, ideally the output is _____________?
A. Vcc
B. 0
C. Vcc/2
D. 2vcc
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______________ multivibrator is a square wave oscillator?
A. Monostable
B. Astable
C. Bistable
D. None of the above
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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