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Electric Circuits

Electric Circuits
Condition of symmetry in ABCD parameter representation is

 C = D.
 A = D.
 AD - BC = 1.
 B = D.

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Electric Circuits
What are the points to be mentioned in specifying main switches?

  None of these.
  Voltage grade.
  Current rating.
  Both A and B.

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Electric Circuits
Number of branches of a graph should be --------- number of branches of a network

 less than
 greater than
 equals to
 less than equals to

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

 Maximum
 Zero
None of these
 Minimum

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Electric Circuits
When water is added to sulphuric acid

  lot of heat is generated.
  water start boiling.
  acid particles get separated.
  colour of acid changes.

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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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