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Electric Circuits

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

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

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Electric Circuits
In series RLC circuit to get Q>1, which of the following is required?

 XL < R
 XL = R
All of these
 XL > R

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Electric Circuits
Which of following is invariably seen in an electroplating plant?

  Rectifier.
  Barrel.
  Distilled water.
  Carbon brushes.

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Electric Circuits
Find the Z parameters of the circuit shown in figure.

 Z11 = 1; Z12 = 1; Z21 = 1; Z22 = 1
 Z11 = 3; Z12 = 3; Z21 = 3; Z22 = 3
 Z11 = 2; Z12 = 1; Z21 = 1; Z22 = 2
 Z11 = 3; Z12 = 1; Z21 = 1; Z22 = 3

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Electric Circuits
One atomic mass unit ( amu ) is approximately equal to

 1.6 × 10-24 Kg.
  1.6 × 10-27 Kg.
 1.6 × 10-13 Kg.
 1.6 × 10-19 Kg.

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Electric Circuits
Which of following capacitors has relatively shorter shelf life?

 Paper.
 Electrolytic.
 both (B) and (C) above.
 Glass.

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