MCQOPTIONS
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| 1. |
Tool life is generally better when: |
| A. | Grain size of the metal is large |
| B. | Grain size of the metal is small |
| C. | Hard constituents are present in the microstructure of the tool material |
| D. | None of the above |
| Answer» C. Hard constituents are present in the microstructure of the tool material | |