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Mechanical Operations

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

Cone crusher
None of these
Jaw crusher
Gyratory crusher

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Mechanical Operations
__________ mills are termed as impactors.

Hammer
Rolling-compression
None of these
Cage

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Mechanical Operations
__________ is a cohesive solid.

None of these
Sand
Wheat
Wet clay

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Mechanical Operations
Solid particles separation based on the difference in their flow velocities through fluids is termed as the

Elutriation
Sedimentation
Classification
Clarification

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Mechanical Operations
Screw conveyors are

Suitable for highly abrasive materials
Suitable for sticky materials
Run at very high rpm
All of these

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Mechanical Operations
A tube mill compared to a ball mill

Produces a coarser product
Uses much larger balls
Has a higher diameter/length ratio
Has a higher length/diameter ratio

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