Perminvar, an alloy noted for its constant magnetic permeability, is composed of________________?
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Answer: A. nickel, copper and iron
Explanation
Perminvar is a magnetic alloy composed primarily of nickel, cobalt (or copper), and iron, exhibiting constant permeability over weak magnetic fields.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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