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Electrical Machines

Electrical Machines
Hysteresis loop represents the area of

 copper loss
 hysteresis loss
 total iron losses
 eddy current loss

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Electrical Machines
In DC generator, brushes are always placed along

 armature axis.
 geometrical neutral axis.
  magnetic neutral axis.
 load axis.

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Electrical Machines
Which of the following motors are suitable for computer printer drive ?

 Reluctance motor.
 Shaded pole motor.
 Hysteresis motor.
  Stepper motor.

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Electrical Machines
Skewing of cage rotors offers the following advantages

  all of below.
  less noise.
  uniform torque.
  locking tendency is reduced.

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Electrical Machines
In DC generator, full form of MNA is what?

 Magnetically no-load armature co-ordinate.
  Magnetic neutral axis.
 Magnetic neutral armature co-ordinate.
 Magnetic no-load axis.

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Electrical Machines
In synchronous generator V curve is drawn between

 field current on Y-axis and armature current on X-axis.
 either of these.
 field current on X-axis and armature current on Y-axis.
 field current on X-axis and power factor on Y-axis.

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MORE MCQ ON Electrical Machines

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