The grooving is an operation of

1.	The grooving is an operation of
A.	Beveling the extreme end of a workpiece
B.	Embossing a diamond shaped pattern on the surface of a workpiece
C.	Reducing the diameter of a workpiece over a very narrow surface
D.	Enlarging the end of a hole cylindrically
Answer» D. Enlarging the end of a hole cylindrically

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The grooving is an operation of

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