Electrical Machines
Which of the following is/are the methods to reduce the armature reaction and its effects?

 pole stacking
 pole chamfering
 compensating winding
All of these

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Electrical Machines
Two of supply terminals to a 3 - Φ induction motor get interchanged during re-connection after normal maintenance. When switched on the supply, the motor will

  not start at all.
  rotate in the same direction as before maintenance.
  rotate in direction opposite to that before maintenance.
  get heated and damaged.

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