Magnetising steel is normals difficult because____________?
Correct answer: D. it has low permeability
- A. it corrodes easily
- B. it has high permeability
- C. it has high specific gravity
- D. it has low permeability
Explanation
Steel has comparatively low permeability, so it requires a strong magnetising force to establish flux in it. This makes magnetising steel more difficult than magnetising soft iron.
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