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Ronan Asked :

17-06-2021 Manufacturing Engineering

Q. Negative back rake angle is given for machining of:

A. Brittle and hard material
B. Soft material
C. Ductile material
D. Soft and ductile material

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Dapzoi Verified
Commented on 2021-06-17 16:30:50 (IST)
Answer: A

Explanation: Brittle material has smaller amount of chip flow and are very strong. As negative back angle tool are very strong, hence these are used for machining of brittle and hard material.