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Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.

A. directly proportional to

B. inversely proportional to

C. dependent of

D. independent of

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  1. Which of the following materials has permeability slightly less than that of free space?
  2. A t/m is a unit of
  3. The physical motion resulting from the forces of magnetic fields is called
  4. What is the SI unit of conductance?
  5. Temporary magnets are commonly employed in
  6. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  7. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
  8. Which of the following materials has the least hysteresis loop area?
  9. It is the reciprocal of reluctance and implies the case of readiness with which magnetic flux is developed.
  10. The magnetic materials should have a large hysteresis loss for one of the following applications.
  11. If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
  12. The phenomenon that when an electric current passes through an anisotropic crystala there is an absorption…
  13. The permittivity of a material is given by one of the following formulas.
  14. Electric potential is a _______ quantity.
  15. The direction of force o a current carrying conductor placed in a m found by
  16. In electro-mechanical conversion devices like generators and motors the reason why a small air gap is…
  17. Ohm's law can be used only to a _____ circuit or component.
  18. The unit of flux is _____ in cgs system.
  19. Back emf refers to the
  20. The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
  21. The force between two magnetic poles is _____ the relative permeability of the medium.
  22. Which of the following magnetic materials can be easily magnetized in both direction?
  23. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  24. The uncharged particles which have no effect on its atomic charge.
  25. The magnetic energy stored in an inductor is ______ current.
  26. An alloy of 22 percent iron and 78 per cent nickel.
  27. Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
  28. The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force…
  29. A law that states that the current in a thermionic diode varies directly with the three- halves power…
  30. The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet