Computer Programming MCQs

5739 MCQs  (Page 131 of 574)

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If two sine waves of the same frequency have a phase difference of JT radians, then_______?
A. Both will reach their minimum values at the same instant
B. Both will reach their maximum values at the same instant
C. When one wave reaches its maxi¬mum value, the other will reach its minimum value
D. None of the above
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Two waves of the same frequency have opposite phase when the phase angle between them is_________?
A. 360°
B. 180°
C. 90°
D. 0°
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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 has the least mean value ?
A. Half wave rectified sine wave
B. Triangular wave
C. Sine wave
D. Square wave
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The r.m.s. value and mean value is the same in the case of___________?
A. Triangular wave
B. Sine wave
C. Square wave
D. Half wave rectified sine wave
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Form factor for a sine wave is________?
A. 1.414
B. 0.707
C. 1.11
D. 0.637
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For a sine wave with peak value Imax the r.m.s. value is_______?
A. 0.5 imax
B. 0.707
C. 0.9
D. 1.414 lmax
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For a sine wave with peak value Emax _______ 8.30. the average value is?
A. 0.636 emax
B. 0.707 emax
C. 0.434 ewc
D. Lauemax
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Form Factor is the ratio of__________?
A. Average value/r.m.s. value
B. Average value/peak value
C. R.m.s. value/average value
D. R.m.s. value/peak value
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The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of_______degrees?
A. 90
B. 60
C. 45
D. 30
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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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