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MECHANICAL OPERATIONS

Mechanical Operations
Reciprocal of sphericity is termed as the

Shape factor
Surface area per unit mass
Specific surface ratio
Sauter diameter

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Mechanical Operations
Which of the following is used for primary crushing of very hard lumpy materials?

Gyratory crusher
Ball mill
Toothed roll crusher
Tube mill

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Mechanical Operations
For spheres, volume shape factor is given by

AD/V
π/6(=V/D³)
π(=A/D²)
2π(=2A/D²)

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Mechanical Operations
__________ are used for the separation of coarse particles from a slurry of fine particles.

Classifiers
Thickeners
Decanters
Hydrocyclones

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Mechanical Operations
To remove dirt from the flowing fluid, we use a

Gravity settler
Clarifier
Strains
Coagulant

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