Electrical Machines
Cogging and crawling are phenomena associated with

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

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Electrical Machines
Two dc machines A and B, using the same conductor material, have armature circuit resistances of 0.4 Ω and 1.2 Ω respectively. Of the two machines,

 A is bigger than B for the same current rating
 both are of the same size for the same current rating
 B is bigger than A for the same current rating
 A is bigger than B for the same voltage rating

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