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Mechanical Operations

Mechanical Operations
A fluid energy mill is used for

Ultra grinding
Cutting
Crushing
Grinding

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Mechanical Operations
Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of 'scrappers'?

Flight conveyor
Both B and C
Screw conveyor
Bucket conveyor

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Mechanical Operations
Rittinger number which designates the new surface prduced per unit of mechanical energy absorbed by the material being crushed, depends on the

State or manner of application of the crushing force
All of these
Elastic constant of the material
Ultimate strength of the material

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Mechanical Operations
Screen efficiency is

Recovery
None of these
Recovery/rejection
Rejection

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Mechanical Operations
Fibrous material is broken by a

Rollcrusher
Squirrel-cage disintegrator
Ball mill
Tube mill

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Mechanical Operations
For removal of very small amounts of precipitate from large volume of water, the most suitable filter is the __________ filter.

Rotary vacuum
Shell & leaf
Plate & frame
Sand

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