31. A diamond locating pin is used in jigs and fixtures because
32. In metal machining, the work-tool contact zone is a zone where heat is generated due to
33. The snag grinding is done
34. The operation of smoothing and squaring the surface around a hole is known as
35. The operation of making a cone-shaped enlargement of the end of a hole is known as
36. Gear burnishing is a process for
37. Drilling is an example of
38. NC contouring is an example of
39. In machining metal, cutting force at the cutting edge is measured by a
40. Trepanning is performed for
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