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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

√2
√3
1
0.5

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Mechanical Operations
Which of the following can be most effectively used for clarification of lube oil and printing ink?

Disc-bowl centrifuge
Sharpies supercentrifuge
Precoat filter
Sparkler filter

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Mechanical Operations
A widely used size reduction equipment for __________ is Bradford breaker.

Iron core
Wheat
Talc
Coal

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Mechanical Operations
Screw conveyors are

All of these
Suitable for highly abrasive materials
Run at very high rpm
Suitable for sticky materials

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

Gyratory crusher
Jaw crusher
None of these
Cone crusher

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Mechanical Operations
__________ is the most commonly used 'filter aid'.

Fuller's earth
Vermiculite
Diatomaceous earth
Semi-plastic clay

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