Electrical Machines
Which slots are used in the rotor of an induction motor?

  Semi closed slots.
  None of above.
  Open slots.
  Closed slots.

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

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Electrical Machines
Cogging and crawling are phenomena associated with

 cage induction machines and they are essentially the same.
 any of the above.
 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.

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