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Electric Circuits

Electric Circuits
In the above question find the angle between voltage and current?

 60.
 30.
 90.
 54.74.

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Electric Circuits
When AC flows through a pure capacitance then the current

 is in phase with emf.
 lags the emf by 90o.
 leads the emf by 90o.
 leads the emf by - 90o.

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Electric Circuits
In ideal system coefficient of coupling(k) is

 0
 ∞
 Both 2 and 3
 1

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Electric Circuits
If the peak value of a sine wave is 100 V, then its RMS value will be

 70.7 V.
 100 V.
 88 V.
 63.6 V.

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Electric Circuits
The rms value of the resultant current in a wire which carries a DC current of 10A and a sinusoidal current of peak value 20A is

 17.3A .
 14.14A.
 30A.
 22.4A.

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Electric Circuits
Electro-chemical equivalent is usually expressed in

  mg per kVA.
  mg per coulomb.
  mg per kW.
  mg per volt.

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MORE MCQ ON Electric Circuits

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