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Electric Circuits

Electric Circuits
What would be the power given by source V2?

 5 W.
 0 W.
 10 W.
 - 5 W.

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Electric Circuits
A voltage of v = 100 sin (wt + π/3) is applied to pure resistor of 30 Ohm. What is the RMS value of current is

 5.77.
 2.36.
 4.71.
 1.92.

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Electric Circuits
When 125 V is applied across a 250 V, 100 W filament incandescent bulbs, the power consumption is

 25 W.
 100 W.
 12.5 W.
 50 W.

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Electric Circuits
A motor having a power factor of 0.8 absorbs in active power of 1200 W the reactive power drawn from the supply is _________ VA.

 250
 900
 400
 130

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Electric Circuits
A periodic voltage having the Fourier series V(t)= {1 + 4sinω0t}

 21 W.
 11 W.
 1 W.
 24.5 W.

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Electric Circuits
2) Two sinusoidal emfs are given as e1 = Asin(wt+45) and e2 = Bsin(wt-30). The phase difference between the two quantities in degrees is

 75.
 60.
 105.
 15.

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MORE MCQ ON Electric Circuits

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