Computer Programming MCQs

5739 MCQs  (Page 129 of 574)

Attempt Computer Programming MCQs Quiz
Which following is a two terminal three layer device?
A. Bjt
B. Power dioed
C. Mosfet
D. None of above
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The period of a sine wave is _____ seconds. Its frequency is
A. 20 hz
B. 30 hz
C. 40 hz
D. 50 hz
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The power consumed in a circuit element will be least when the phase difference between the current and voltage is__________?
A. 180″
B. 90°
C. 60°
D. 0°
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For the same peak value which of the following wave will ‘have the highest r.m.s. value?
A. Square wave
B. Half wave rectified sine wave
C. Triangular wave
D. Sine wave
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The phase difference between voltage and current wave through a circuit element is given as 30°. The essential condition is that
A. Both waves must have same frequency
B. Both waves must have identical peak values
C. Both waves must have zero value at the same time
D. None of the above
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In a series resonant circuit, the impedance of the circuit is___________?
A. Minimum
B. Maximum
C. Zero
D. None of the above
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Power factor of an electrical circuit is equal to____________?
A. r/z
B. cosine of phase angle difference be-tween current and voltage
C. kw/kva
D. ratio of useful current to total cur¬rent iw/i
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The best place to install a capacitor is___________?
A. Very near to inductive load
B. Across the terminals of the inductive load
C. Far away from the inductive load
D. Any where
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All the rules and laws of D.C. circuit also apply to A.C. circuit containing_____________?
A. Capacitance only
B. Inductance only
C. Resistance only
D. All above
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Power factor of an inductive circuit is usually improved by connecting capacitor to it in____________?
A. Parallel
B. Series
C. Either a. or (b)
D. None of the above
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Word of the Day
17 Jul
Flagrant
(of an action considered wrong or immoral) conspicuously or obviously offensive.
انتہائی برا، قابل مذمت، فاش

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