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Electric Circuits

Electric Circuits
The energy stored by a capacitor is given by

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

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

  Distilled water.
  Rectifier.
  Barrel.
  Carbon brushes.

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Electric Circuits
If the sheet of a backelite is inserted between the plates of an air capacitor, the capacitance will

 remains unchanged.
 increase.
 becomes zero.
 decrease.

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Electric Circuits
For the circuit shown in the given figure the current I is given by

 2 A.
 3 A.
 4 A.
 1 A.

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

 Maximum
None of these
 Zero
 Minimum

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Electric Circuits
If N is the number of nodes and b is the number of branches in a network, then rank of cut set matrix is

 b - N - 1.
 N - 1.
 N.
 b - N + 1.

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