GATE Mechanical Engineering (ME) 2015 Shift 1 Solved Paper

An orthogonal turning operation is carried out under the following conditions: rake angle = 5°, spindle rotational speed = 400 rpm; axial feed = 0.4 m/min and radial depth of cut = 5 mm. The chip thickness t_c, is found to be 3 mm. The shear angle (in degrees) in this turning process is ________.