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Electrical Machines

Electrical Machines
Eddy current loss will depends on

 Frequency
 Thickness
All of these
 Flux density

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Electrical Machines
Hysteresis loop represents the area of

 eddy current loss
 hysteresis loss
 copper loss
 total iron losses

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Electrical Machines
In a synchronous machine, if the field flux axis is ahead of the armature field axis in the direction of rotation, the machine operating is

  asynchronous generator.
  asynchronous motor.
  synchronous motor.
  synchronous generator.

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Electrical Machines
Breather is provided in a transformer to

 absorb moisture from air entering in transformer.
  absorb moisture of air during breathing.
 filter the transformer oil.
 provide cold air in transformer.

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Electrical Machines
Exciting current of an induction motor is

  equal as power transformer.
  lesser than power transformer.
  higher than power transformer.
  none of these.

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Electrical Machines
If the mechanical angle α between the stator and rotor poles increases, then the stator current

  Increases.
 Decreases.
 None of above.
 Remains unchanged.

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MORE MCQ ON Electrical Machines

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