Critical Speed (Nc ) of a ball mill is given by (where R1 and R2 are radii of ball mill and the ball respectively). (A) Nc = (1/4π). √(g/R1 - R2 ) (B) Nc = (1/2π). √(g/R1 - R2 ) (C) Nc = (1/π). √(g/R1 - R2 ) (D) Nc = (1/2π). √(R1 - R2 /g)

Critical Speed (Nc
) of a ball mill is given by (where R1 and R2 are radii
of ball mill and the ball respectively).
(A) Nc = (1/4π). √(g/R1
- R2
)
(B) Nc = (1/2π). √(g/R1
- R2
)
(C) Nc = (1/π). √(g/R1
- R2
)
(D) Nc = (1/2π). √(R1
- R2
/g)
by

1 Answer

Answer :

(B) Nc = (1/2π). √(g/R1
- R2
)
by

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