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Mechanical Operations

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

Classifiers
Decanters
Hydrocyclones
Thickeners

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Mechanical Operations
Which of the following achieves the least reduction ratio for a given feed size?

Cone crusher
Jaw crusher
Gyratory crusher
Roll crusher

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Mechanical Operations
A cottrel precipitator makes use of the __________ for dusty air cleaning.

Electric spark
Alternating current
Corrona discharge
None of these

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Mechanical Operations
Sphericity of pulverised coal is

∞
1
>1

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Mechanical Operations
Jigging is a technique by which different particles can be

Separated by particle size
Separated by particle density
Mixed
Separated by particle shape

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Mechanical Operations
Chance process is used for the

Concentration of pyrites
Cleaning of coal
Water treatment
Concentration of iron ore

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