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The emf produced in a wire by its motion across a magnetic field does not depend upon the

A. Diameter of the wire

B. Length of the wire

C. Orientation of the wire

D. Flux density of the field

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  1. Another term for corona discharge.
  2. The unit of flux density is
  3. A magnetic circuit carries a flux iin the iron part and a fluxgin the air gap. What is the leakage coefficient?
  4. Which of the following statements is TRUE?
  5. The hot resistance of an incandescent lamp is about _______ its cold resistance.
  6. Which of the following materials has the least hysteresis loop area?
  7. What is used as the insulating material or dielectric in an electric ion
  8. The magnetic field of a magnetized iron bar when strongly heated
  9. What is the SI unit of conductivity?
  10. The total number of magnetic lines of force in a magnetic field is called
  11. A commercial alloy of aluminum nickela and iron with cobalta copper and titanium added to produce about…
  12. Permeance is analogous to
  13. The ability of a material to conduct magnetic flux through it.
  14. What solid has no defined crystal structure except perhaps in the arrangement of the nearest neighboring…
  15. The branch of Engineering which deals with the magnetic effect of electric current is known as
  16. The K shell or the first shell has how many permissible number of orbiting electrons?
  17. If the number of valence electrons of an atom is more than 4a the substance is called
  18. Which of the following is a paramagnetic material?
  19. The electric potential at a point in air due to a charge is 21 V. If the air is replaced by a medium…
  20. A negatively charge body has
  21. The temperature coefficient of resistance of insulators is
  22. A magnetic field is
  23. The evaporation of electrons from a heated surface is called
  24. Electric lines of force leave or enter the charge surface at an angle of
  25. __________ is a substance of whose molecules consist of the same kind of atom.
  26. When a current carrying conductor is placed in a magnetic fielda the maximum force will act on the conductor…
  27. Two similar polesa each 1Wba placed 1 m apart in air will experience a repulsive force of
  28. The point in a magnet where the intensity of magnetic lines of force is maximum
  29. The unit of electrical energy is
  30. If a 20 V potential is applied across a relay coil with 50 turns having 1 ? of resistancea the total…