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Mechanical Operations

Mechanical Operations
For achieving maximum capacity of the ball mill, the ball charge should be equal to about __________ percent of the ball mill volume.

10
50
25
75

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Mechanical Operations
A compressible cake has the

Maximum porosity at the upstream side
None of these
Maximum porosity at the filter medium
Same porosity throughout the cake thickness

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Mechanical Operations
Which is the most suitable conveyor for transportation of sticky material?

Screw conveyor
Belt conveyor
Pneumatic conveyor
Apron conveyor

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

Decanters
Hydrocyclones
Classifiers
Thickeners

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Mechanical Operations
Screen efficiency is

Rejection
None of these
Recovery/rejection
Recovery

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Mechanical Operations
The process opposite to 'dispersion' is termed as the

Sedimentation
None of these
Flocculation
Filtration

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