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Electric Circuits

Electric Circuits
Which of following is the unit of magnetic flux density?

 Lumens.
 Daraf.
 Weber.
 Tesla.

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Electric Circuits
According to duality principle a series inductor (L) can be represented as

 Parallel L.
 Parallel C.
 Series C.
 Series L.

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Electric Circuits
1 F is theoretically equal to

 none of these
 1 ohm of resistance
 ratio of 1 V to 1 C
 ratio of 1 C to 1 V

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Electric Circuits
What is the real power in AC operation?

 None of these.
 Both option A and B.
 VIcosφ.
 Apperant power × cosφ.

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Electric Circuits
Efficiency of electrical machines should be calculated by measuring

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

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Electric Circuits
What is Va in the below circuit?

 (4R + 10) / 3.
 (3R + 10) / 3.
 (6R + 10) / 3.
 (6R - 10) / 3.

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MORE MCQ ON Electric Circuits

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