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Mechanical Operations

Mechanical Operations
Fluid energy mill comes in the category of

Grinder
Crusher
Cutter
Ultrafine grinder

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Mechanical Operations
In a size reduction crushing operation, feed size is 300 to 1500 mm while the product size is 100 to 300 mm. This is a case of the __________ crushing.

Secondary
Ultrafine
Primary
Fine

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Mechanical Operations
For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter (d) as

D²
D
1/d
√d

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Mechanical Operations
Energy consumed for crushing one ton of material ranges from __________ kWh.

4 to 5
2 to 3.5
0.01 to 0.1
0.5 to 1.5

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Mechanical Operations
Cake resistance is

Important in the beginning of filtration
None of these
Independent of pressure drop
Decreased with the time of filtration

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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.

Plane
Ribbed
Either A or B
Curved

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