Question

· Tool life in the 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
(d) taken for a wear of 1 mm on its diameter​

Answer 1

Answer:

answer is b) taken for the wheel to be balanced

Answer 2

Time  taken between two successive wheel dressings

Explanation:  When the surface of the grinding wheel becomes dull and the bonds are broken it needs to be dressed in order to let the fresh atoms of the grinding wheel come on the surface and hence grind effectively