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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
1
√2
0.5

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Mechanical Operations
Energy requirement (per unit mass of material crushed/ground) is highest for

Jaw crusher
Ball mill
Fluid energy mill
Rod mill

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Mechanical Operations
The specific cake resistance for compressible sludges is a function of the pressure drop

Over medium
Overall
Over cake
None of these

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Mechanical Operations
Screen capacity is expressed in terms of

Tons/hr-ft²
Tons/hr
Tons/ft²
Both A & B

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Mechanical Operations
Vibrating screens have capacity in the range of __________ tons/ft² .mm mesh size.

5 to 25
50 to 100
0.2 to 0.8
100 to 250

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Mechanical Operations
Which of the following is not used as a filter medium in case of corrosive liquids?

Metal cloth of monel or stainless steel
Nylon
Glass cloth
Cotton fabric

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