[Solved] Friction welding is process.

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Q.	Friction welding is process.
A.	costly
B.	cost saving
C.	time consuming
D.	highly material selective
Answer» B. cost saving
Explanation: since dissimilar materials can be joined, a significant cost savings are possible because engineers can design bimetallic parts that use expensive materials only where needed. expensive forgings and castings can be replaced with less expensive forgings welded to bar stock, tubes, plates and the like.

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