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The core of a magnetic equipment uses a magnetic material with

A. Least permeability

B. Low permeability

C. Moderate permeability

D. High permeability

Correct Answer : D.


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  1. The physical motion resulting from the forces of magnetic fields is called
  2. The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
  3. Electron is a Greek word for
  4. The magnetic potential in a magnetic circuit can be measured in terms of
  5. An atom or a group of atoms that carries a net electric charge.
  6. What is used as the dielectric material in high voltage transformers?
  7. The magnetic flux through a wire loop in a magnetic field does not d
  8. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  9. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  10. The unit of flux is _____ in cgs system.

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    When the current flowsa the magnetic field ««. conductor is in what direction?
  12. A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 × 10^-6
  13. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  14. A magnetic material losses its ferromagnetic properties at a point called
  15. Defined as a closed path in which magnetic induction or flux flows
  16. The permeability of a material having a flux density of 5 Wb/m^2 is 10^-5 H/m. What is the value of…
  17. The diameter of a hydrogen atom is approximately ______ cm.
  18. Two similar polesa each 1Wba placed 1 m apart in air will experience a repulsive force of
  19. Calculate the permeability (in T/A. t/m) of a magnetic material that has a relative permeability of…
  20. A substance that attracts pieces iron
  21. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
  22. The process by which an emf and hence current is generated or induced in a conductor when there is a…
  23. What is another name for relative permittivity?
  24. A test charge means a charge of
  25. A negative ion results when an atom gains an additional
  26. The temperature coefficient of resistance of semiconductors is
  27. What is the value of the absolute permittivity of air?
  28. Three charges of +5 Ca -6 C and +9 C are placed inside a sphere. What is the total flux passing through…
  29. A positively charged body has
  30. One farad equals