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Electric Circuits

Electric Circuits
The energy stored by a capacitor is given by

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

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Electric Circuits
Cells are connected in parallel in order to increase

 efficiency.
 current capacity.
 voltage rating.
 life of the cells.

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Electric Circuits
In a 3 - φ delta connection, two-wattmeter method is used to measure the power; if the two watt meters read 28.13 kW and 13.31 kW, the power factor of connection will be

 0.4.
 0.6.
 0.9.
 0.85.

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Electric Circuits
In the circuit shown in the figure, the value of Vs is 0, when I = 4 A. The value of I, when Vs = 16 V, is

 12 A.
 8 A.
 6 A.
 10 A.

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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?

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

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Electric Circuits
In RLC series circuit, at resonance condition the value of current is

 Zero
 Maximum
 Minimum
None of these

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MORE MCQ ON Electric Circuits

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