21. |
Out of the following materials, the area of hysteresis loop will be least for………
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Answer:
Option (b) |
22. |
Which factor is used to justify the following statement? "The length of the core is not occupied by iron only; some part of the length is occupied by ventilating ducts as well as insulation between the steel lamination.
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Answer:
Option (a) |
23. |
____________________ =
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Answer:
Option (d) |
24. |
What is the function of the leakage flux?
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Answer:
Option (d) |
25. |
What is the formula to obtain the hysteresis loss devised by Steinmetz?
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Answer:
Option (c) |
26. |
How are the eddy current losses in the machine reduced?
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Answer:
Option (d) |
27. |
What are the factors the slot leakage permeance will depend upon?
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Answer:
Option (d) |
28. |
What is the formula of the permeance of the strip in the conductor portion?
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Answer:
Option (c) |
29. |
What is the formula of the effective permeance of conductor portion?
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Answer:
Option (b) |
30. |
What is pulsation losses?
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Answer:
Option (d) |