Electrical Machines
Two windings provided on the stator of 1-phase induction motor, one main winding and the other auxiliary winding are connected

 in series
 in parallel
 through inductive coupling
 either of these depending on the design of the motor

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Electrical Machines
Cogging and crawling are phenomena associated with

 the former during starting and the latter at a fraction of its rated speed.
 cage induction machines and they are essentially the same.
 any of the above.
 the former at a fraction of its rate speed and the latter during starting.

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Electrical Machines
In a star - delta starting of an IM

  reduced voltage is applied to the stator.
  resistance is inserted in the rotor.
  applied voltage per stator phase is 57.7 % of a line volt
  line voltage is 57.7 % of stator voltage.

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