Electrical Machines
Cogging and crawling are phenomena associated with

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

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Electrical Machines
For an ideal transformer the winding should have

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

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