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Electric Circuits

Electric Circuits
Under resonance condition the power factor of a system is

 leading
 unity
 any of the above
 lagging

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Electric Circuits
Internal resistance of ideal current source is

 zero
 infinite
 100 ohms
 finite

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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

 30A.
 14.14A.
 22.4A.
 17.3A .

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Electric Circuits
Capacitor does not allow the sudden change of

None of these
 voltage
 current
 power

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Electric Circuits
For balanced star load, if unbalanced line current are IR, IY, IB equal to - j10, - j10 and - j20 respectively, the neutral current will be equal to

  (8.66 - j5) A.
  (-9.66 + j5) A.
  (-8.66 - j5) A.
  (8.66 + j5) A.

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Electric Circuits
The equation for 25 cycles current sine wave having rms value of 30 amps, will be

 30sin50πt.
 42.4sin50πt.
 30sin25πt.
 42.4sin25πt.

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MORE MCQ ON Electric Circuits

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