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Electric Circuits

Electric Circuits
The phase angle difference between current and voltage is 90o, the power will be

 minimum.
 VI.
 zero.
 maximum.

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Electric Circuits
Time constant is the time taken for response to rise -------of maximum value?

 63.2%
 100%
 90%
 68.3%

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Electric Circuits
Two resistances R1 and R2 give combined resistances 4.5 Ω and 1 Ω when they are connected in series and parallel respectively. What would be the values of these resistances?

 3 Ω and 9 Ω.
  3 Ω and 6 Ω.
 6 Ω and 9 Ω.
  1.5 Ω and 3 Ω.

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Electric Circuits
What is the reactive power in AC operation?

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

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Electric Circuits
Which of the following is applicable for both linear and non-linear circuits?

 Norton’s theorem.
 Superposition theorem.
 Thevnin’s theorem.
 None of these .

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Electric Circuits
The greater the internal resistance of a cell

 the greater the emf.
 the lesser the emf.
 the greater the terminal voltage.
 the lesser the terminal voltage.

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MORE MCQ ON Electric Circuits

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