Mechanical Operations
The most suitable equipment for the transportation of 200 mesh size particles is a

Belt conveyor
Pneumatic conveyor
Bucket elevator
Screw conveyor

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Mechanical Operations
Crushing efficiency is the ratio of the

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

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