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Electric Circuits

Electric Circuits
The form factor of sinusoidal alternating current is

 1.11.
 0.
 1.15.
 1.

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Electric Circuits
Super position theorem is not applicable for

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

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Electric Circuits
In direct arc furnace which of following is of high value?

 Voltage.
 All of above.
 Current.
 Power factor.

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Electric Circuits
The switch S is the circuit shown in figure is ideal. If the switch is repeatedly closed for 1 ms and opened for 1 ms, the average value of i(t) is

  0.25 mA.
 0.35 mA.
 1 mA.
 0.5 mA.

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Electric Circuits
Power factor can be defined as

 cosine of angle between voltage and current.
 both option B and C.
 sine of voltage and current.
 ratio of resistance versus impedance.

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Electric Circuits
In the figure, the potential difference between points P and Q is

 6 V.
 10 V.
 - 6 V.
 12 V.

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MORE MCQ ON Electric Circuits

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