The angle formed by the leading edge of the land with a plane having the axis of the drill, is called

A Helix or rake angle
B Point angle
C Chisel edge angle
D Lip clearance angle

Correct Answer: Helix or rake angle

The angle formed by the leading edge of the land with a plane having the axis of the drill, is called Helix or rake angleThe rake angle is the angle of the surface of a cutting tool tip over which the removed chips flow. The rake angle is the angle between the front or cutting face of the tool and a line perpendicular to the workpiece
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