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Mechanical Operations

Mechanical Operations
Which of the following may prove unsuitable for filtering volatile liquids?

Pressure filter
Centrifugal filter
Vacuum filter
Gravity filter

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Mechanical Operations
Ball mills and tube mills with flint or porcelain balls are used for size reduction of

Asbestos
Rubber
Non-metallic ores
Limestone

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Mechanical Operations
Length/diameter ratio of a ball mill is

1.5
< 1
1
> 1

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Mechanical Operations
Which of the following comes in the category of primary crusher for hard and tough stone?

Jaw crusher
Cone crusher
None of these
Gyratory crusher

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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.

Rotary
Sand
Vacuum
Plate & frame

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Mechanical Operations
For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is

1125
2250
460
230

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