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Mechanical Operations

Mechanical Operations
Ore concentration by jigging is based on the difference in the __________ of the particles.

Wettability
Shape
None of these
Specific gravities

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Mechanical Operations
For coarse reduction of hard solids, use

Cutting
Impact
Compression
Attrition

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Mechanical Operations
During size reduction by a jaw crusher, the energy consumed decreases with the

Increasing size of feed at constant reduction ratio
Decreasing machine capacity
None of these
Decreasing size of product at constant size of feed

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Mechanical Operations
Two particles are called to be equal settling, if they are having the same.

Size
Terminal velocities in the same fluid & in the same field of force
Specific gravity
None of these

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Mechanical Operations
The energy consumed by a ball mill depends on

All of these
Its ball load
Its speed
The density of the material being ground

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Mechanical Operations
In case of a plate and frame filter press, filtrate flow through the cake follows __________ flow.

Laminar
None of these
Turbulent
Plug

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