Electrical Machines
For which of the following loads, armature reaction is magnetizing in nature?

 pure capacitive load
 pure resistive load
None of these
 pure inductive load

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Electrical Machines
Cogging and crawling are phenomena associated with

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

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