Bolt and nut made of same metal is preferred in practice. Why?
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Answer:
Nuts and bolts made up of the same metal are preferred because they have the same strength and stress resistance.
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Bolt and nut made of same metal is chosen as:
Explanation:
- When the fastener system is of a different material than the material being fastened either the fastener or the base material.
- It may be corroded which depends on the difference in electrode potential of the metals.
- Necessarily the difference in potential sets up a mini battery and causes corrosion.
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