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Mechanical Operations

Mechanical Operations
Percentage of drum submerged in the slurry in case of rotary drum filter is

25
3
85
30

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Mechanical Operations
The opening of a 200 mesh screen (Taylor series) is

0.0047 cm
0.0074 mm
0.0074 cm
74 mili-microns

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Mechanical Operations
Trommels employ __________ for screening of materials.

None of these
Fibrous cloth
Punched plate
Woven wire screen

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Mechanical Operations
With increase in the capacity of screens, the screen effectiveness

Remains unchanged
Decreases exponentially
Increases
Decreases

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Mechanical Operations
Weber number is significant and is concerned with the

Solid-liquid mixing
Liquid-liquid mixing
Suspension of solid in liquid
Dispersion of liquid in liquid

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Mechanical Operations
Power consumption during turbulent flow in agitation tank is proportional to the __________ of the liquid.

Viscosity
Thermal conductivity
Surface tension
Density

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