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Electric Circuits

Electric Circuits
The unit of electric field intensity is

 F/ m2.
 F / m.
 N / C.
 N / Ampere.

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Electric Circuits
A 3 wire, 3 - φ supply feeds a load consisting of three equal resistors. By how much is the load reduced if one of the resistors be removed when the load is in star?

 50 % of the original load.
 66.66 % of the original load.
 25 % of the original load.
 33.33 % of the original load.

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Electric Circuits
The energy stored by a capacitor is given by

 all of them.
 1/2 CV2.
 1/2 QV.
 Q2 / 2C.

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Electric Circuits
A paper capacitor is usually available in form of

 disc.
 meshed plates.
 rolled foil.
 tubes.

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Electric Circuits
What is the reactive power in AC operation?

 Apparent power × sinθ.
 Apparent power × cosθ.
 Real power × cosθ.
 Real power × sinθ.

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Electric Circuits
A p.d. of 300 V is applied across series combination of 3 μF and 9 μF capacitors. The charge on each capacitor is ___________________ μC.

 240.
 7.5.
 3600.
 675.

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MORE MCQ ON Electric Circuits

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