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One of the common application of an air- cored choke.

A. Radio frequency

B. Audio frequency

C. Power supply

D. Power transformer

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  1. What is used as the insulating material or dielectric in an electric ion
  2. The property of magnetic materials of retaining magnetism after withdrawal of the magnetizing force…
  3. A positively charged body has
  4. If the value of 0 a conductor is 1/234 per oCa then the value of 18is
  5. What bond is formed when one or more electrons in the outermost energy orbit of an atom are transferred…
  6. The ability of a material to conduct magnetic flux through it.
  7. Electromotive force in a circuit
  8. Calculate the flux density that will be produced by the field intensity of 2000 a. t/m for a permeability…
  9. Which of the following materials has permeability slightly less than that of free space?
  10. One of the solid structures in which the position of the atoms or ions are predetermined
  11. A magnetic material losses its ferromagnetic properties at a point called
  12. If the resistance of a material 2 m long and 2 m^2 in area of cross-section is 1.6 ×10^-8 ?a then…
  13. Permeance is analogous to
  14. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  15. Which of the following has the least number of valence electrons?
  16. The phenomenon by which a subtracts pieces of iron
  17. One of the common application of an air- cored choke.
  18. The magnetic field of a bar magnet most closely resembles the magnetic field of
  19. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  20. The air space between poles of magnets
  21. The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
  22. The magnetic materials should have a large hysteresis loss for one of the following applications.
  23. What principle states that each electron in an atom must have a different set of quantum numbers?
  24. What is the relative permittivity of air?
  25. All magnetic field originates from
  26. Hysteresis is a phenomenon of _________ in a magnetic circuit.
  27. Ohm's law can be used only to a _____ circuit or component.
  28. The net electrical charge in an isolated system remains constant. This is known as
  29. Two similar polesa each 1Wba placed 1 m apart in air will experience a repulsive force of
  30. The permittivity of a material is given by one of the following formulas.