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Steel is hard to magnetize because of its

A. Low permeability

B. High permeability

C. High density

D. High retentivity

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  1. A t/m is a unit of
  2. Lenz's law is the consequence of the law of conservation of
  3. Under ordinary conditionsa a body is considered
  4. What is the unit of magnetomotive force?
  5. One electron volt (1 eV) is equivalent to _____ joules
  6. Cobalt is an example of a ______ material.
  7. How many neutrons does a copper atom have?
  8. Materials whose permeabilities are slightly greater than that of free space
  9. If the value of 0 a conductor is 1/234 per oCa then the value of 18is
  10. The B-H curve for ________ is a straight line passing through the origin.
  11. A good conductor has how many valence electrons?
  12. How is mutual inductance between two coils decreased?
  13. What is the relative permittivity of air?
  14. Three charges of +5 Ca -6 C and +9 C are placed inside a sphere. What is the total flux passing through…
  15. The core of a magnetic equipment uses a magnetic material with
  16. The ability of a material to conduct magnetic flux through it.
  17. The direction of force o a current carrying conductor placed in a m found by
  18. One of the solid structures in which the position of the atoms or ions are predetermined
  19. A theorem which states that an electric current flowing in a circuit produces a magnetic field at external…
  20. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  21. If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
  22. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  23. The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
  24. The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
  25. Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
  26. The reluctance of a magnetic circuit varies with
  27. If the magnetic material is located within a coil through which alternating current (60 Hz frequency)…
  28. Who developed the electromagnetic theory of light in 1862?
  29. The resistance of a material is ____________ its area of cross-section.
  30. The flux density in an air-cored coil is 10^-3 Wb/m^2. With a cast iron core of relative permeability…