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The following data relate to an orthogonal turning process;

Back rake angle = 15deg

Width of cut = 2mm

Chip thickness = 0.4mm

Feed rate = 0.2mm/rev

                                   

The shear angle is

(a) 140           (b) 250          (c) 290             (d) 750

 

If the cutting force and the thrust force are 900N and 810N, the mean strength in Mpa

(a) 138.94            (b) 477.91            (c) 500.58           (d) 635.84

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