Manufacturing And Production Technology
In metal machining, the work-tool contact zone is a zone where heat is generated due to

Plastic deformation of metal
Burnishing friction
None of these
Friction between the moving chip and the tool face

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Manufacturing And Production Technology
Glazing in grinding wheels takes place when the

Wheel is too soft or wheel revolves at a very slow speed
Wheel is too hard or wheel revolves at a very high speed
Wheel is too soft and wheel revolves at a very high speed
Wheel is too hard and wheel revolves at very slow speed

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