Electrical Machines
Which method is less recommendable for induction motor starting in the industries?

  Rotor resistance starting.
  Auto transformer starting.
  Stator resistance starting.
  Direct online starting.

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Electrical Machines
For an ideal transformer the winding should have

 equal resistance on primary and secondary side
 maximum resistance on primary side and least resistance on secondary side
 minimum resistance on primary side and maximum resistance on secondary side
 no ohmic resistance on either side

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