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

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Manufacturing And Production Technology
The lip clearance angle is the angle formed by the

None of the listed here
Leading edge of the land with a plane having the axis of the drill
Chisel edge and the lip as viewed from the end of a drill
Flank and a plane at right angles to the drill axis

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