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Mechanical Operations

Mechanical Operations
Highly viscous liquids & pastes are agitated by

Turbine agitators
Propellers
Multiple blade paddles
None of these

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Mechanical Operations
__________ conveyors are also called scrapers.

Apron
Screw
Both B & C
Helical flight

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Mechanical Operations
Size reduction does not occur due to compression in case of

Jaw crushers
Smooth roll crushers
Rod mills
Gyratory crushers

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Mechanical Operations
200 mesh screen means 200 openings per

Inch
Cm²
Cm
Inch²

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Mechanical Operations
Sphericity of pulverised coal is

∞
>1
1

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Mechanical Operations
The optimum moisture content in solids to be crushed/ground ranges from __________ percent.

15 to 20
8 to 10
10 to 15
3 to 4

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