Computer Programming MCQs

5739 MCQs  (Page 130 of 574)

Attempt Computer Programming MCQs Quiz
Power factor of the following circuit will be unity
A. Inductance
B. Capacitance
C. Resistance
D. Both a. and b.
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The double energy transient occur in the____________?
A. Purely inductive circuit
B. R-l circuit
C. R-c circuit
D. R-l-c circuit
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Which of the following is the most likely source of harmonics in a transformer ?
A. Poor insulation
B. Overload
C. Loose connections
D. Core saturation
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A sine wave has a frequency of 50 Hz. Its angular frequency is ________ radian/second.
A. 100 n
B. 50 jt
C. 25 jt
D. 5 n
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The form factor is the ratio of_______?
A. Peak value to r.m.s. value
B. R.m.s. value to average value
C. Average value to r.m.s. value
D. None of the above
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The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes_______ohms?
A. 2.5
B. 5
C. 10
D. 15
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The period of a wave is___________?
A. The same as frequency
B. Time required to complete one cycle
C. Expressed in amperes
D. None of the above
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If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is____________?
A. A sinusoid of the same frequency
B. A sinusoid of half the original frequency
C. A sinusoid of double the frequency
D. Not a sinusoid
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The voltage of domestic supply is 220V. This figure represents__________?
A. Mean value
B. R.m.s. value
C. Peak value
D. Average value
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A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to__________?
A. Average voltage
B. R.m.s. voltage
C. Peak voltage
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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