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
In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed?

 The speed will remains almost constant.
 The speed will increase abruptly.
 The speed will increase gradually.
 The speed will increase in proportion to reduction in load.

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