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Mechanical Operations

Mechanical Operations
Percentage of drum submerged in the slurry in case of rotary drum filter is

30
25
85
3

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Mechanical Operations
In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the

Square root of the velocity
Washing time only
Square of the viscosity
Filtration time only

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Mechanical Operations
The most suitable filter for the removal of very small amount of precipitate from very large volumes of water is the __________ filter.

Vacuum
Plate & frame
Rotary
Sand

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Mechanical Operations
The reduction ratio for fine grinders is

20-40
44124
43961
As high as 100

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Mechanical Operations
Traces of liquid tar fog present in coke oven gas is separated using

None of these
Cyclone separator
Electrostatic precipitator
Strainer

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Mechanical Operations
Supporting legs of a plate and frame filter is normally made of

Wooden plank
Stainless steel
High speed steel
Cast iron

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