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Electric Circuits

Electric Circuits
Under resonance condition the phase angle between voltage phase and current phase is

 - 90°
 90°
 45°
 0°

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Electric Circuits
In series RLC circuit what is the power factor just above the resonance frequency?

 Leading
 Zero
 Lagging
 Unity

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Electric Circuits
A capacitor has a capacitance of 6 μF. Calculate the stored energy in it if a DC voltage of 100 V, is applied across it?

 3 × 102 joules.
 2.5 × 102 joules.
 6 × 102 joules.
 4 × 102 joules.

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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 current in R is

 2.54 A.
 5.08 A.
 1.27 A.
 10.16 A.

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Electric Circuits
A 3 wire, 3 - φ supply feeds a load consisting of three equal resistors. By how much is the load reduced if one of the resistors be removed when the load is in star?

 50 % of the original load.
 33.33 % of the original load.
 66.66 % of the original load.
 25 % of the original load.

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Electric Circuits
The current in a chemical cell is a movement of

  negative ions only.
  positive ions only.
 positive hole charges.
  positive and negative ions.

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MORE MCQ ON Electric Circuits

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