Q.18. 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 0.48mm. If the orthogonal rake angle is zero and the principal cutting edge angle is 90°, the shear angle in degree is
(A) 20.56
(B) 26.56
(C) 30.56
(D) 36.56
Answer: (B)
Explanation:
