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MECHANICAL OPERATIONS

Mechanical Operations
Size measurement of ultrafine particles can be best expressed in terms of

Surface area per unit mass
Micron
Screen size
Centimetre

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Mechanical Operations
Rittinger number which designates the new surface prduced per unit of mechanical energy absorbed by the material being crushed, depends on the

Elastic constant of the material
State or manner of application of the crushing force
Ultimate strength of the material
All of these

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Mechanical Operations
In case of a plate and frame filter press, filtrate flow through the cake follows __________ flow.

None of these
Plug
Laminar
Turbulent

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Mechanical Operations
Screen capacity is not a function of

Atmospheric humidity
Screening mechanism
Its openings size
Screening surface

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Mechanical Operations
In case of a hammer crusher, the

Rotor shaft carrying hammers can be vertical or horizontal
Minimum product size is 3 mm
Feed may be highly abrasive (Moh's scale >5)
Maximum feed size may be 50 mm

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