Mechanical Operations
In a roll crusher, the specific power consumption and the production rate is affected by the

Both A & B
Neither A nor B
Reduction ratio
Differential roll speed

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Mechanical Operations
Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for

British standard screens
All of these
German standard screens (DIN 1171) etc
American standard screens (ASTM and Tyler standard screens)

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