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Electric Circuits

Electric Circuits
In RLC parallel network R = 2 Ohm, L = 2mH and C = 1μF. Find the value of time constant?

 2 msec
 4 μsec
 2 μsec
 4 msec

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The phase angle of current in respect of supply voltage will be

 40.4o.
 28.8o.
 20.2o.
 32.1o.

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Electric Circuits
Current magnification will occur in which of the following case?

None of these
 Both
 Parallel resonance
 Series resonance

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Electric Circuits
In what connection we get neutral?

  Star.
  Both A and B.
  Mesh.
  Delta.

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Electric Circuits
If P is the power of a star connected system then what will be power of an equivalent delta connected system?

 P/3
 P
 3P
None of these

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Electric Circuits
Basic cut set matrix consists of

 no branches.
 2 branch.
 any number of branches.
 one branch.

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