14638. The tool may fail due to

By Admin / September 13, 2025

cracking at the cutting edge due to thermal stresses

chipping of the cutting edge

plastic deformation of the cutting edge

all of these

✅ The correct answer is option D.

14633. In metal machining, the zone where the maximum heat is generated due to the plastic deformation of metal, is called

14643. The ratio of emissive power of a body to the emissive power of a perfectly black body is called emissivity.

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