Question

The effects of setting  boring tool above centre height leads to a/an

(a) increase in the effective rake angle and a decrease in the effective clearance angle

(b) increase in both effective rake angle and effective clearance angle

(c) decrease in effective rake angle and an increase in the effective clearance angle

(d) decrease in both effective rank angle and effective clearance angle

Answer 1

This is known as error in tool setting.

If we set tool above the central axis then rake angle increase and in same manner clearance angle decrease.