Home

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

You can do it
  1. Which element has four valence electrons?
  2. Hysteresis is a phenomenon of _________ in a magnetic circuit.
  3. The magnetic flux through a coil changes. This results to the induced emf acting in a direction as to
  4. What bond is formed when electrons in the outermost energy orbits of the atoms are shared between two…
  5. What is the cgs unit of magnetomotive force?
  6. Electric potential is a _______ quantity.
  7. The phenomenon by which a magnetic substance becomes a magnet when it is place near a magnet
  8. The permeability of a material having a flux density of 5 Wb/m^2 is 10^-5 H/m. What is the value of…
  9. The force between two charges placed a given distance apart ______ as the relative permittivity of the…
  10. How many neutrons does a copper atom have?
  11. Calculate the flux density that will be produced by the field intensity of 2000 a. t/m for a permeability…
  12. If a magnetic flux cuts across 200 turns at a rate of 2Wb/sa the induced voltage according to Faraday's…
  13. The temperature coefficient of resistance of insulators is
  14. What is the relative permittivity of air?
  15. The emf induced in a coil due to the changing current of another neighboring coil is called
  16. What is the unit of magnetomotive force?
  17. The magnetic energy stored in an inductor is ______ current.
  18. If the length and area of cross-section of a wire are doubleda then its resistance
  19. What is the SI unit of conductivity?
  20. Magnetic fields do not interact with
  21. Which of the following is a paramagnetic material?
  22. A law that states that the current in a thermionic diode varies directly with the three- halves power…
  23. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  24. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
  25. If a 20 V potential is applied across a relay coil with 50 turns having 1 ? of resistancea the total…
  26. A 6- V battery is connected across a solenoid of 100 turns having a resistance of 2 ?a Calculate the…
  27. What is the typical saturation flux density for most magnetic materials?
  28. Theory of ferromagnetic phenomena which assumes each atom is a permanent magnet which can turn freely…
  29. When a conductor is stationary and the magnetic field is moving or changing the emf induced is called
  30. What type of bond is formed when there exists some form of collective interactions between the (negatively…