Which of the following magnetic materials can be easily magnetized in both direction?

A. Soft magnetic materials

B. Hard magnetic materials

C. High hysteresis loss materials

D. Low hysteresis loss materials

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  1. The reluctance of a magnetic circuit varies with
  2. Formed when there exist distant electronic interactions between (opposite) charges present in the neighboring…
  3. Flux linkages equals
  4. What revolves about the positive nucleus in a definite orbit?
  5. A group of magnetically aligned atoms is called
  6. The ratio between the intensity of magnetization produced in a substance to the magnetizing force producing…
  7. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  8. The point in a magnet where the intensity of magnetic lines of force is maximum
  9. The evaporation of electrons from a heated surface is called
  10. Refers to the magnetic lines
  11. The direction of force o a current carrying conductor placed in a m found by
  12. Lenz's law is the consequence of the law of conservation of
  13. One of the solid structures in which the position of the atoms or ions are predetermined
  14. The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium…
  15. How many turns are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?
  16. The temperature coefficient of resistance of conductors is
  17. The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
  18. The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization…
  19. One coulomb of charge consists of ________ electrons.
  20. Which of the following statements is TRUE?
  21. Ohm's law cannot be applied to which material?
  22. A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material…
  23. The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
  24. The ratio of the permeability of material to the permiabiity of air or vacuum.
  25. Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
  26. The unit of flux density is
  27. When the relative permeability of a material is much greater than 1a it is called _______ material.
  28. A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.
  29. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  30. What is the usual value of leakage coefficient for electrical machines?