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Mechanical Operations

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

Decanters
Classifiers
Hydrocyclones
Thickeners

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Mechanical Operations
Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface.

Curved
Ribbed
Plane
Either A or B

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Mechanical Operations
Paddle agitator

None of these
Is suitable for mixing low viscosity liquids
Produces axial flow
Moves at very high speed

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Mechanical Operations
Which of the following comes in the category of primary crusher for hard and tough stone?

None of these
Gyratory crusher
Jaw crusher
Cone crusher

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Mechanical Operations
Sphericity of pulverised coal is

>1
1
∞

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

25
10
75
50

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