The hardness of a grinding wheel is specified by the Options: A . &nbspAlphabetical letter B . &nbspRockwell hardness number C . &nbspBrinell hardness number D . &nbspNone of these

The hardness of a grinding wheel is specified by the

Question

The hardness of a grinding wheel is specified by the

Options:

A . Alphabetical letter

B . Rockwell hardness number

C . Brinell hardness number

D . None of these

Answer: Option A

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