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Electric Circuits

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

 0.5.
 0.866.
 1.
 0.577.

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Electric Circuits
The rms value of sinusoidal voltage wave V = 200sinω0t

 100√2 V.
 100 V.
 200√2 V.
 200 V.

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Electric Circuits
A capacitor carries a charge of 0.1 C at 5 V. Its capacitance is

 0.05 F
 0.02 F
 0.2 F
 0.5 F

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Electric Circuits
In given figure, the value of resistance R in Ω is

 2.5 Ω
 3.5 Ω
 1 Ω
 4.5 Ω

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Electric Circuits
Constant K type HPF (high pass filter) having cut off frequency 12 KHz and nominal impedance Ro = 500 Ω Find shunt arm inductor L and series arm capacitance C for T and π section of HPF ?

 L = 0.0132 mH, C = 0.0132 μF.
 None of these.
 L = 3.316 mH, C = 0.0132 μF.
 L = 3.316 mH, C = 132 μF.

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Electric Circuits
The voltage across R and L in a series RL circuit are found to be 200 V and 150 V respectively the rms value of the voltage across the series combination is ______ V.

 250
 200
 360
 450

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