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Electric Circuits

Electric Circuits
For symmetrical wave form average value of one full cycle is

 2.22
 1.11
 1
 0

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Electric Circuits
Super position theorem is not applicable for

None of these
 current calculations.
 power calculations.
 voltage calculations.

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Electric Circuits
A current of 4 A flows in an ac circuit when 100 V dc is applied to it whereas it takes 250 v ac to produce the same current the power factor of the circuit is

 10.
 0.4.
 0.85.
 1.

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Electric Circuits
Which resistor will be physically larger in size?

 10 Ω, 50 W.
 100 Ω, 10 W.
 1 M Ω, 1/2 W.
 1 k Ω, 1 W.

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Electric Circuits
Two identical resistors are first connected in parallel then in series. The ratio of resultant resistance of the first combination to the second will be

 0.25.
 0.5.
 4.
 2.

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Electric Circuits
A 230V, 50Hz voltage is applied to a coil having L = 5H and R = 2 Ohm in series with capacitance C. When the voltage across the coil is 400V, find the value of C?

 10.54 µF.
 1.8 µF.
 4.78 µF.
 8.51 µF.

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MORE MCQ ON Electric Circuits

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