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Mechanical Operations

Mechanical Operations
Gravity stamp mill is meant for the __________ crushing.

Ultrafine
Fine
Intermediate
Primary

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Mechanical Operations
The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a

Propeller agitator
Sharpies centrifuge
None of these
Boundary mixer

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Mechanical Operations
Angle of nip of the crushing rolls does not depend upon the

Feed size
Diameter of the rolls
Speed of the rolls
Product size

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Mechanical Operations
The process by which fine solids is removed from liquids is termed as

Flocculation
Decantation
Sedimentation
Classification

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Mechanical Operations
For the transportation of ultrafine particles, the equipment used is a........conveyor.

Screw
Belt
Pneumatic
None of these

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Mechanical Operations
The critical speed of a trommel (N) is related to its dia (D) as

N ∝ 1/√D
N ∝ D
N ∝ 1/D
N ∝ √D

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