A single-point cutting tool with 120C rake angle is used to machine a steel work-piece. The depth of cut, i.e., uncut thickness is 0.81 mm. The chip thickness under orthogonal machining condition is 1.8 mm. The shear angle is approximately

A single-point cutting tool with 120C rake angle is used to machine a

1.	A single-point cutting tool with 120C rake angle is used to machine a steel work-piece. The depth of cut, i.e., uncut thickness is 0.81 mm. The chip thickness under orthogonal machining condition is 1.8 mm. The shear angle is approximately
A.	22<sup>0</sup>C
B.	26<sup>0</sup>C
C.	56<sup>0</sup>C
D.	76<sup>0</sup>C
Answer» C. 56<sup>0</sup>C