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How many turns are needed to produce a magnetomotive force of 1000 A.t for a coil with 6 amperes?

A. 6000 turns

B. 600 turns

C. 167 turns

D. 67turns

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  1. What is the SI unit of magnetic flux?
  2. Magnetic intensity is a
  3. The magnetic field of a bar magnet most closely resembles the magnetic field of
  4. The quantity 10^6 maxwells is equivalent to one
  5. The quantity of magnetism retained by a magnetic material after withdrawal of the magnetizing force…
  6. An effect which is generally used in the gausameter to measure flux density.
  7. When the relative permeability of a material is slightly more than 1a it is called ______ material.
  8. The flux density in an air-cored coil is 10^-3 Wb/m^2. With a cast iron core of relative permeability…
  9. Mmf in a magnetic circuit corresponds to _____ in an electric circuit
  10. The greater percentage of materials is _________.
  11. Core materials of a good relay have _________ hysteresis loop.
  12. All magnetic field originates from
  13. A negative ion results when an atom gains an additional
  14. What is the SI unit of reluctance?
  15. A principle that states that only two electrons with different spins are allowed to exist in a given…
  16. Flux linkages equals
  17. A commercial alloy of aluminum nickela and iron with cobalta copper and titanium added to produce about…
  18. The core of a transformer heats up when its primary is fed from an ac source because of
  19. Define as that pole which when placed in air from a similar and equal pole repels it with a force of…
  20. Which of the following is a natural magnet?
  21. The electrons in the last orbit of an atom are called _______ electrons.
  22. A current if flowing east along a power line. If the earth's field is neglecteda the direction of the…
  23. Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
  24. If the value of 0 a conductor is 1/234 per oCa then the value of 18is
  25. The force of attraction or repulsion between two magnetic poles is directly proportional to their strengths.
  26. The reluctance of a magnetic circuit is not dependent on which of the following?
  27. Which of the following magnetic materials can be easily magnetized in both direction?
  28. A magnetic material losses its ferromagnetic properties at a point called
  29. Steel is hard to magnetize because of its
  30. Amorphous solid is also called