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  1. If the value of 0 a conductor is 1/234 per oCa then the value of 18is
  2. Which of the following statements is TRUE?
  3. A magnetizing force of 1000 AT/m will produce a flux density of __________ i
  4. What type of bond is formed when there exists some form of collective interactions between the (negatively…
  5. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
  6. The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
  7. What bond is formed when electrons in the outermost energy orbits of the atoms are shared between two…
  8. If the relative permittivity of a material is 10a then its permittivity is
  9. What is the main advantage of temporary magnets?
  10. One electron volt (1 eV) is equivalent to _____ joules
  11. A magnetic flux of 2.5 x10^4 Wb through an area of 5 x10^4 square meters results in
  12. If the number of valence electrons of an atom is exactly 4a then the substance is called
  13. Hysteresis refers to the ______ between flux density of the material and the magnetizing force applied.
  14. The magnetic field of a magnetized iron bar when strongly heated
  15. Hysteresis is a phenomenon of _________ in a magnetic circuit.
  16. The force between two magnetic poles is _____ their poles strength.
  17. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  18. Permeability means
  19. Used to maintain strength of magnetic field
  20. The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization…
  21. The branch of Engineering which deals with the magnetic effect of electric current is known as
  22. What is the usual value of leakage coefficient for electrical machines?
  23. Refers to the non- metallic materials that have the ferromagnetic properties of iron.
  24. The magnetic flux through a wire loop in a magnetic field does not d
  25. A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material…
  26. If the number of valence electrons of an atom is more than 4a the substance is called
  27. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  28. A group of magnetically aligned atoms is called
  29. What is the typical saturation flux density for most magnetic materials?
  30. The induced emf in a wire loop that is moved parallel to a uniform magnetic field is