11. |
A substance whose permeability is more than the permeability of free space is?
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Answer:
Option (d) |
12. |
The unit for permeability of free space is?
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Answer:
Option (c) |
13. |
Calculate the magnetic flux density (T) if the magnetic field strength is 2A/m.
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Answer:
Option (b) |
14. |
What is the unit for relative permeability?
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Answer:
Option (d) |
15. |
Which of the following expressions is correct with respect to relative permeability?
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Answer:
Option (a) |
16. |
As the temperature increases up to the Curie temperature, the relative susceptibility of ferromagnetic materials?
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Answer:
Option (a) |
17. |
(i) When the length of the material increases, what happens to reluctance?
(ii) When the area of cross-section of the material increases, what happens to reluctance?
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Answer:
Option (a) |
18. |
Unit of reluctance is?
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Answer:
Option (d) |
19. |
Calculate the reluctance (A/Wb) when the magnetomotive force is 10 A-turns and the flux is 5Wb.
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Answer:
Option (c) |
20. |
The electrical equivalent of reluctance is?
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Answer:
Option (a) |