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Electric Circuits

Electric Circuits
Time constant is the time taken for response to rise -------of maximum value?

 63.2%
 100%
 90%
 68.3%

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

 10 V.
 6 V.
 12 V.
 - 6 V.

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Electric Circuits
An ideal constant voltage source has _______________ internal impedance whereas a constant current source has ____________ internal impedance.

 zero, infinite
 infinite, zero
 zero, zero
 infinite, infinite

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Electric Circuits
In RLC series circuit, if the voltage across capacitor is greater than voltage across inductor, then power factor of the network is

 zero.
 lagging.
 unity.
 leading.

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Electric Circuits
The active and reactive power in an AC circuit are 10W and 20VAR respectively. What is the power factor?

 0.577.
 0.866.
 1.
 0.5.

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Electric Circuits
A 3Ω resistor having 2A current will dissipate the power of

 12 W.
 4 W.
 8 W.
 2 W.

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MORE MCQ ON Electric Circuits

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