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Electric Circuits

Electric Circuits
Which part of magnetic path requires largest mmf?

 Coil.
 Air gap.
 Core.
 Inductance.

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Electric Circuits
The internal resistance of lead acid cell is _______________ that of Edison cell.

 less than.
 none of above.
 more than.
 equal to.

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Electric Circuits
Efficiency of electrical machines should be calculated by measuring

 losses and input.
 losses.
 output and input.
 losses and output.

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Electric Circuits
The power dissipated in a pure capacitor is

 zero.
 proportional to the value of capacitance.
 proportional to applied voltage.
 both (B) and (C) above.

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Electric Circuits
For the network shown below when I = 0, V = 20 V and when R = 0, I = 10 A. If now R = 3 Ω what is the value of the current I?

 6 A.
 5 A.
 10 A.
 4 A.

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Electric Circuits
Form factor is equal to Peak factor in case of

All of these
 square wave.
 saw tooth wave.
 triangle wave.

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MORE MCQ ON Electric Circuits

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