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Electric Circuits

Electric Circuits
In the network shown, what is the current I in the direction shown?

 5 / 6 A.
 4 A.
 1 / 3 A.
 0 A.

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Electric Circuits
The efficiency in case of maximum power transfer theorem is

 100 %.
 50 % - 100 %.
 less than 50 %.
 50 %.

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Electric Circuits
A capacitor carries a charge of 0.3 C at 20 V. Its capacitance is

 0.015 F.
 1.5 F.
 15 μF.
 1.5 μF.

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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?

 0.866.
 0.5.
 1.
 0.577.

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Electric Circuits
For the circuit shown below the value of R is adjusted so as to make the current in RL equal to zero. Calculate the value of R.

 3 Ω.
 2 Ω.
 1 Ω.
 4 Ω.

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

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

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MORE MCQ ON Electric Circuits

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