Can a magnetic shaft generate current flow in a rotating magnetic field?

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Discussion Overview

The discussion centers around the potential for a rotating magnetic shaft to generate current flow, particularly focusing on the materials used for the shaft, such as magnetic and non-magnetic materials. Participants explore the implications of different materials on electrical conductivity and current generation in a magnetic field.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions whether a magnetic material is necessary for current flow in a rotating shaft within a magnetic field.
  • Another participant suggests that any conductive material could suffice, but notes that the shape of the shaft may influence current generation.
  • Concerns are raised about the potential for circulating currents in a long, thin, solid metal cylindrical shaft.
  • Participants inquire about the differences in electrical properties between iron and stainless steel as shaft materials.
  • One participant defines iron as a magnetic material and stainless steel as non-magnetic, questioning the implications for leakage currents in both types of materials.
  • A suggestion is made to test the magnetic properties of stainless steel by checking if it is attracted to a magnet.

Areas of Agreement / Disagreement

Participants express differing views on the necessity of using magnetic materials for current generation, and there is no consensus on the electrical differences between iron and stainless steel. The discussion remains unresolved regarding the implications of material choice on current flow.

Contextual Notes

Some assumptions about the shape and configuration of the shaft are not fully explored, and the discussion does not clarify the specific conditions under which current generation may occur.

Who May Find This Useful

Individuals interested in the electrical properties of materials in magnetic fields, particularly in engineering or experimental physics contexts, may find this discussion relevant.

kranth90
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If iam using a magnetic material as a shaft. The rotating shaft in a magnetic field can cause the flow of current? resulting current flow in shaft?? please clarify me...
 
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The shaft doesn't need to be of a magnetic material, any material that conducts electricity will do. Unless your shaft is an odd shape, there should not be much to worry about. A long thin solid metal cylindrical shape spinning on its longitudinal axis won't have much circulating current. If the shaft were made of layers and strips of a conductor separated by an insulating material in a really strong field this might cause problem voltages and currents.

Do you have an unusual application in mind?
 
Thanks for your valuable reply. whatever you said is good but really i have a different thought please clear me what the major differences when i use the shaft materials as iron & Stainless steel.
 
kranth90 said:
Thanks for your valuable reply. whatever you said is good but really i have a different thought please clear me what the major differences when i use the shaft materials as iron & Stainless steel.
They would have quite different mechanical capabilities, but I can't imagine the electrical differences (if any) would be significant in this respect.

Do you have an unusual application in mind?
 
can i define iron as a magnetic material & ss as a non magnetic material ? If so What about the leakage currents condition in shaft Materials of both magnetic & non magnetic materials?

Please answer with patience don't think as foolish bcoz i m poor in this...
 
Do you have a magnet you can test to see whether it attracts one of your kitchen SS knives?

A shaft could be made of a non-magnetic material such as brass, or fibreglass.

It seems that I'm not going to have my question answered?
Do you have an unusual application in mind?
 

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