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Electric Circuits

Electric Circuits
Voltage magnification will occur in which of the following case?

None of these
 Both
 Parallel resonance
 Series resonance

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Electric Circuits
The equation for 25 cycles current sine wave having rms value of 30 amps, will be

 42.4sin50πt.
 30sin50πt.
 42.4sin25πt.
 30sin25πt.

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Electric Circuits
In series R, L circuit power factor can be defined as

All of these
 R/Z
 Vr/V
 P/S

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Electric Circuits
The energy required to charge a 10 μF capacitor to 100 V is

 5 × 10-9 J.
 10 × 10-9 J.
 0.05 J.
 0.01 J.

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Electric Circuits
Active element of electrical circuit is

 both of them.
 current source.
 none of above.
 voltage source.

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Electric Circuits
A current in a circuit is given by, If the current flows through the 5 Ω resistor, find power dissipated at t = 0?

 40 Watts.
 15 Watts.
 10 Watts.
 20 Watts.

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MORE MCQ ON Electric Circuits

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