An alloy of 40 percent iron and 60 percent nickel.

A. Alnico

B. Permalloy

C. Hipernik

D. Manganin

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  1. Referred to as the specific reluctance of a material
  2. The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization…
  3. The electric potential across part AB of a circuit is 5 V; point A being at higher potential. If a charge…
  4. The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
  5. What is the cgs unit of magnetomotive force?
  6. The branch of Engineering which deals with the magnetic effect of electric current is known as
  7. The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
  8. The resistance of a material is ____________ its area of cross-section.
  9. All matters (gasa liquid and solid) are composed of
  10. A magnetic field is
  11. In electro-mechanical conversion devices like generators and motors the reason why a small air gap is…
  12. Which of the following materials has permeability slightly less than that of free space?
  13. __________ is a substance of whose molecules consist of the same kind of atom.
  14. The temperature coefficient of resistance of a conductor ______ with an increase in temperature.
  15. As the magnetic intensity decreasesa the relative permeability of a magnetic material
  16. Electric field intensity is measured in
  17. Which of the following is a paramagnetic material?
  18. Which of the following materials has the least hysteresis loop area?
  19. The magnetic field inside a solenoid
  20. A good conductor has how many valence electrons?
  21. It is the reciprocal of reluctance and implies the case of readiness with which magnetic flux is developed.
  22. The temperature coefficient of resistance of eureka is
  23. Refers to the non- metallic materials that have the ferromagnetic properties of iron.
  24. The temperature coefficient of resistance of semiconductors is
  25. The emf induced in a coil due to the changing current of another neighboring coil is called
  26. What is the SI unit of specific resistance or resistivity?
  27. The reluctance of a magnetic circuit varies with
  28. A group of magnetically aligned atoms is called
  29. The evaporation of electrons from a heated surface is called
  30. A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in