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Mechanical Operations

Mechanical Operations
Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is

√3
0.5
1
√2

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Mechanical Operations
Sphericity of pulverised coal is

1
>1
∞

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Mechanical Operations
Size reduction of asbestos and mica is done by

Gyratory crushers
Hammer mills
Crushing rolls
Rod mills

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Mechanical Operations
Which of the following is not categorised as a "mechanical operation"?

Agitation
Humidification
Filtration
Size enlargement

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Mechanical Operations
Size reduction of fibrous materials like wood, asbestos, mica etc. is done by a disintegrator exemplified by the

Stamp mill
Cage mill
Bradford's breaker
Blake jaw crusher

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Mechanical Operations
200 mesh screen means 200 openings per

Inch²
Inch
Cm²
Cm

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