In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting velocity is 90 m/min. The feed is 0.24 mm/rev and the depth of cut is 2 mm. The chip thickness obtained is 0.48 mm. If the orthogonal rake angle is zero and the principle cutting edge angle is 90‚Äö√Ö‚àû, the shear angle in degree is?

In orthogonal turning of a low carbon steel bar of diameter 150 mm wit

1.	In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting velocity is 90 m/min. The feed is 0.24 mm/rev and the depth of cut is 2 mm. The chip thickness obtained is 0.48 mm. If the orthogonal rake angle is zero and the principle cutting edge angle is 90‚Äö√Ö‚àû, the shear angle in degree is?
A.	20.56
B.	26.56
C.	30.56
D.	36.56
Answer» C. 30.56

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