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Electric Circuits

Electric Circuits
Reactive power drawn by a pure resistor is

 0
 minimum
 maximum
None of these

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Electric Circuits
Which of following materials has the least resistivity ?

  Zinc.
  Mercury.
  Lead.
  Copper.

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Electric Circuits
When power factor angle is varying, the shape of the current locus is

 Semicircle
 Circle
 Straight line
 Triangle

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Electric Circuits
Coating generally recommended for hard surfacing is

 lead plating.
 chromium plating.
None of these
 copper plating.

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Electric Circuits
The life of a lead acid battery is expected to be

 1 year.
 6 months.
 2 to 5 years.
 10 to 15 years.

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Electric Circuits
A 100 μF capacitor supplied from 3 V source with a frequency of 50 Hz. The capacitive reactance is

 31.84 Ω.
 7.96 Ω.
 15.92 Ω.
 63.68 Ω.

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MORE MCQ ON Electric Circuits

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