Mechanical Operations
In the cyclone separator used for separation of dust from dust laden gas, the gas

Both B and C
Develops a helical motion inside the chamber
Is admitted tangentially at high velocity
Enters the cyclone from the top

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Mechanical Operations
Crushing efficiency is the ratio of the

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