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Electric Circuits

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

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

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Electric Circuits
What is the reactive power in AC operation?

 Apparent power × sinθ.
 Real power × sinθ.
 Apparent power × cosθ.
 Real power × cosθ.

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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 tie set matrix is

 N.
 N - 1.
 b - N + 1.
 b - N - 1.

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Electric Circuits
The capacitance of a conductor is varying from 2 microfarad to zero in 1 sec linearly if the voltage applied to it is 6 V the energy stored in 0.5 sec in the condenser is

 10 µ joules.
  55.1 µ joules.
 20 µ joules.
 18 µ joules.

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Electric Circuits
In which of the following networks it is not possible to find the transient free response?

 RC
 RL, RC, and RLC
 RL
 RLC

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Electric Circuits
If the length of a wire of resistance R is uniformly stretched to n times its original value, what will be its new resistance

  n2 / R.
  n2R.
  R / n2.
  nR .

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