The critical speed of a trommel () is related to its dia () as

1.	The critical speed of a trommel () is related to its dia () as
A.	N ∝
B.	N ∝
C.	N ∝ D
D.	N ∝
Answer» B. N ∝

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The critical speed of a trommel () is related to its dia () as

The critical speed of a trommel () is related to its dia () as

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