rpm of a trommel at critical speed is given by (where, D = Diameter of

1.	rpm of a trommel at critical speed is given by (where, D = Diameter of trommel in ft)
A.
B.
C.
D.	76.75 D
Answer» C.

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

rpm of a trommel at critical speed is given by (where, D = Diameter of trommel in ft)

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