Important Electrical Machine Design Multiple Choice Questions and Answers

1.  ...........are always double layer type

   A. Closed windings

   B. Open windings

   C. Either of the above

   D. None of the above

2.  ............electromagnets generally function as holding magnets

   A. Tractive

   B. Portative

   C. Either of the above

   D.None of the above

3.  tractive magnets are operated from

   A. AC supply

   B. DC supply

   C. Either AC or DC supply

   D. none of the above

4.  By which of the following methods the temperature rise of windings and other parts may be determined?

   A. Thermometer method

   B. Resistance method

   C. Embedded temperature detector method

   D. Any of the above

5.  ...........are used for construction of course of electromagnets

   A. Soft magnetic materials

   B. Hard magnetic materials

   C. Either A or B

   D. None of the above

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