Mechanical Operations
Cartridge filters are termed as 'edge' filters, because of the fact that the

Disks have very sharp edge
Bulk of the solids are removed at the periphery of the disks
None of these
Solids are not deposited at the edge of the disk

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Mechanical Operations
Crushing efficiency is the ratio of the

Energy absorbed by the solid to the surface energy created by crushing
Surface energy created by crushing to the energy absorbed by the solid
Energy absorbed by the solid to that fed to the machine
Energy fed to the machine to the surface energy created by crushing

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