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Electric Circuits

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

 15 μF.
 1.5 F.
 0.015 F.
 1.5 μF.

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Electric Circuits
Aluminium is produced from bauxite by

  electrolytic process.
  froth flotation.
  oxidation.
  rotating.

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Electric Circuits
In the given figure the value of the source voltage is

 44 V.
 30 V.
 12 V.
 24 V.

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Electric Circuits
Active element of electrical circuit is

 current source.
 none of above.
 voltage source.
 both of them.

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Electric Circuits
A star connected load has three equal impedance each of (40 + j30) Ω If the line current is 5 A then value of line voltage is

 250 √3 V.
 200 V.
 250 V.
 250 / √3 V.

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

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

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MORE MCQ ON Electric Circuits

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