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MECHANICAL OPERATIONS

Mechanical Operations
Reciprocal of sphericity is termed as the

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

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

Ball mill
Tube mill
Gyratory crusher
Toothed roll crusher

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Mechanical Operations
For spheres, volume shape factor is given by

2π(=2A/D²)
π(=A/D²)
AD/V
π/6(=V/D³)

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

Classifiers
Decanters
Thickeners
Hydrocyclones

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

Clarifier
Coagulant
Gravity settler
Strains

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