31. In drilling aluminium, a drill with
32. Jigs are used
33. The common welding error that occurs due to shrinkage of weld metal, faulty clamping of parts, faulty penetration or overheating at joints is called?
34. A drill considered as a cutting tool having zero rake, is known as a
35. A lathe with four steps on the cone pulley and with back-gears will have
36. The process of removing metal by a cutter which is rotated against the direction of travel of workpiece, is called
37. The process of removing metal by a cutter which is rotated in the same direction of travel of workpiece, is called
38. Which of the following statement is correct for orthogonal cutting system?
39. In metal machining, the zone where the heat is generated due to friction between the moving chip and the tool face, is called
40. The hardness of a grinding wheel is specified by
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