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Materials whose permeabilities are slightly greater than that of free space

A. Paramagnetic

B. Non- magnetic

C. Ferromagnetic

D. Diamagnetic

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  1. Which of the following magnetic materials can be easily magnetized in both direction?
  2. The B-H curve for ________ is a straight line passing through the origin.
  3. Refers to the non- metallic materials that have the ferromagnetic properties of iron.
  4. A positively charged body has
  5. If the value of 0 a conductor is 1/234 per oCa then the value of 18is
  6. When a conductor is stationary and the magnetic field is moving or changing the emf induced is called
  7. The relation between absolute permittivity of air ( 0)a absolute p and velocity of light (c) is given…
  8. What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
  9. The space outside the magnet where its pole have a force of attraction or repulsion on a magnetic pole…
  10. The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium…
  11. The magnetic field of a magnetized iron bar when strongly heated
  12. Permeance of a magnetic circuit is _________ the cross-sectional area of the circuit.
  13. One coulomb of charge consists of ________ electrons.
  14. Lenz' law states that the direction of the induced emf and hence current
  15. Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
  16. What is used as the dielectric material in high voltage transformers?
  17. Which of the following materials has the highest dielectric strength?
  18. What is the SI unit of magnetic flux?
  19. Flux linkages equals
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    A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 10^-6
  21. The conduction of electricity across the surface of a dielectric is called
  22. If on looking at any one end of a solenoid; the direction of current flow is found to be clockwise then…
  23. Which of the following has the least number of valence electrons?
  24. If you hold the conductor with right hand so that the stretched thumb points in the direction of the…
  25. The straight line passing through the two poles of magnet is called
  26. The hot resistance of an incandescent lamp is about _______ its cold resistance.
  27. The force acting on a pole of 5 Wb is 25 N. What is the intensity of the magnetic field?
  28. A law that states that the current in a thermionic diode varies directly with the three- halves power…
  29. What is the main advantage of temporary magnets?
  30. What is the typical saturation flux density for most magnetic materials?