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Electric Circuits

Electric Circuits
Which law(s) find application in electrolysis?

 Ohms law.
 Coulombs law.
 Gausss law.
 Faradays law.

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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
The synchronous speed for the seventh space harmonic mmf wave of 8 pole, 50 Hz induction machine will be

 107.14 rpm in reverse direction.
 5250 rpm in reverse direction.
 5250 rpm in forward direction.
 107.14 rpm in forward direction.

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Electric Circuits
A motor having a power factor of 0.8 absorbs in active power of 1200 W the reactive power drawn from the supply is _________ VA.

 900
 250
 130
 400

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Electric Circuits
In delta connected circuit when one resistor is open, then power will be

 reduced by the factor of 3.
 increased by factor of 3.
  remain unchanged.
 0.

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Electric Circuits
Power dissipation in ideal inductor is

 Maximum
 Minimum
 Zero
 A finite value

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