The tool life in case of a grinding wheel is the time

1.	The tool life in case of a grinding wheel is the time
A.	Between two successive regrinds of the wheel
B.	Taken for the wheel to be balanced
C.	Taken between two successive wheel dressings
D.	Taken for a wear of 1 mm on its diameter
Answer» D. Taken for a wear of 1 mm on its diameter

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The tool life in case of a grinding wheel is the time

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