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Electric Circuits

Electric Circuits
Which of the followings is the expression for energy stored in a capacitor?

 C / v.
 Cv.
 (1 / 2) Cv2.
 C dv / dt.

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Electric Circuits
Magnetic flux has the unit of

 Weber
  Tesla
 Ampere turn
 Newton

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Electric Circuits
If the dielectric of a capacitor is replaced by conducting material

 the capacitor can store infinite charge.
 the capacitor will get heated up due to eddy currents.
 the plate will get short circuited.
 the capacitance value of the plate will decrease.

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Electric Circuits
A current of 4 A flows in an ac circuit when 100 V dc is applied to it whereas it takes 250 v ac to produce the same current the power factor of the circuit is

 0.4.
 10.
 1.
 0.85.

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Electric Circuits
Current efficiency in electroplating is usually

  50 to 60 %.
  90 to 98 %.
  99 %.
  70 to 80 %.

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Electric Circuits
A dependent source can be

 a current source.
 a voltage source.
 neither a voltage nor a current source.
 both a voltage or a current source.

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