The operating speed of a ball mill should be __________ the critical speed. Options: A . &nbspless than B . &nbspmuch more than C . &nbspat least equal to D . &nbspslightly more than

The operating speed of a ball mill should be _________

Question

The operating speed of a ball mill should be __________ the critical speed.

Options:

A . less than

B . much more than

C . at least equal to

D . slightly more than

Answer: Option A
Answer: (a).less than

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