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Electrical Machines

Electrical Machines
Total core loss is also called as -------------?

 Hysteresis loss
 Copper loss
 Eddy current loss
 Magnetic loss

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Electrical Machines
The use of higher flux density in the transformer design

 has no relation with the weight of transformer
 increases the weigh per KVA
None of these
 reduces the weigh per KVA

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Electrical Machines
If we increase the rotor reactance value, the maximum torque will

None of these
 not changed
 decrease
 increase

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Electrical Machines
In a synchronous motor, damper windings are provided on

  stator frame.
None of these
  rotor shaft.
  pole faces.

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Electrical Machines
A commutator in dc machine provide ----------------- rectification?

 full wave controlled
 full wave
 half wave
 half wave controlled

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Electrical Machines
A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is

 0.08
 -0.08
 -1.92
 1.92

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MORE MCQ ON Electrical Machines

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