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Electric Circuits

Electric Circuits
Which of the following is the heaviest?

 Electron.
 Proton.
 Atom.
 Molecule.

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Electric Circuits
The instantaneous values of line current into a delta connected load in any two lines are + 2.5 amps and - 1.25 amps the current in the third line at the instant is ___________ A.

 10
 2.5
 - 1.25
 1

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Electric Circuits
What will be the capacitance when distance between the 2 plates of a condenser of capacitance 8 micro farad is reduced from 10 mm to 4 mm?

 3.2 microfarad.
 20 microfarad.
 8 microfarad.
 1 microfarad.

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Electric Circuits
From the circuit diagram shown in question 1 find the thevnin voltage.

 1.5 V.
 15 V.
 5 V.
 3 V.

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Electric Circuits
What is the reactive power in AC operation?

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

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Electric Circuits
The energy stored by a capacitor is given by

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

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MORE MCQ ON Electric Circuits

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