Mechanical Operations
Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them.

Ball mill, Jaw crusher, Fluid energy mill
Fluid energy mill, Jaw crusher, Ball mill
Fluid energy mill, Ball mill, Jaw crusher
Jaw crusher, Ball mill, Fluid energy mill

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Mechanical Operations
During agitation of liquids, the

All of these
Froude number is used to account for the effect of surface (e.g., the centre vortex) on the power number
Power number becomes independent of impellers Reynolds number at high Reynolds number, but is dependent on the geometry of the impeller
Froude number is independent for the curves between power number and Reynolds number in baffled system

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Mechanical Operations
In case of grinding in a ball mill

Wet grinding achieves a finer product size than dry grinding
All of these
Its capacity decreases with increasing fineness of the products
Grinding cost and power requirement increases with increasing fineness of the products

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