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Electric Circuits

Electric Circuits
In direct arc furnace which of following is of high value?

 All of above.
 Voltage.
 Current.
 Power factor.

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Electric Circuits
In a capacitor, the electrical energy is stored in

 magnetic field.
 electric field.
 none of above.
 both ‘electric field’ and magnetic field’.

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Electric Circuits
In steady state condition capacitor acts as a

 voltage source
 current source
 open circuit
 short circuit

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Electric Circuits
Which of the following may be value of resistivity of copper?

 1.7 X 10 - 5.
 1.7 X 10 - 3.
 1.7 X 10 - 4.
 1.7 X 10 - 6.

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Electric Circuits
The value of specific gravity of acid when a lead acid battery is fully charged is

 1.285.
 2.9585.
 2.585.
 2.185.

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Electric Circuits
The resistivity of the conductor depends on

 type of material.
 none of these.
 length of the conductor.
 area of the conductor.

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MORE MCQ ON Electric Circuits

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