In orthogonal turning of a bar of 100 mm diameter with a feed of 0.25 mm/rev, d

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In orthogonal turning of a bar of 100 mm diameter with a feed of 0.25 mm/rev, depth of cut of 4 mm and
cutting velocity of 90 m/min, it is observed that the main (tangential) cutting force is perpendicular to the
friction force acting at the chip-tool interface. The main (tangential) cutting force is 1500 N. The orthogonal rake angle of the cutting tool in degree is

Options:

A . zero

B . 3.58

C . 5

D . 7.16

Answer: Option A

-NA-

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