Question

a dense structure of a grinding wheel is denoted by the number

Answer 1

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✔Ans = Open structure.

It includes number of abrasives and number of pores in unit volume. In case of dense grinding wheels abrasive particles are densely packed as compared to open grinding wheel with larger porosity.

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Answer 2

Open structure.

It includes number of abrasives and number of pores in unit volume. In case of dense grinding wheels abrasive particles are densely packed as compared to open grinding wheel with larger porosity.