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Mechanical Operations

Mechanical Operations
Which of the following is a continuous filter?

None of these
Plate and frame filter
Cartridge filter
Shell and leaf filter

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Mechanical Operations
The sphericity of a cylinder of 1 mm diameter and length 3 mm is

0.6
0.9
0.5
0.78

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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
During filtration operation, the filtrate encounters the resistance of the

Channel carrying the slurry to the upstream side of the cake and filtrate away from the filter medium
All of these
Cake
Filter medium

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Mechanical Operations
Temperature of the product during ultrafine grinding

Remains constant
Increases
Decreases
May increase or decrease ; depends on the material being ground

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Mechanical Operations
If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is Φs is defined by

Φs = 6 Vp/dp sp
Φs = Vp/dp sp
Φs = dp Sp/Vp
Φs = 6 dp Sp/Vp

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