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Mechanical Operations

Mechanical Operations
For transporting pasty material, one will use a/an

Belt conveyor
Bucket elevator
Apron conveyor
Screw colaveyor

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Mechanical Operations
For spheres, volume shape factor is given by

π(=A/D²)
2π(=2A/D²)
AD/V
π/6(=V/D³)

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Mechanical Operations
Energy consumed for crushing one ton of material ranges from __________ kWh.

0.01 to 0.1
2 to 3.5
0.5 to 1.5
4 to 5

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Mechanical Operations
For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter)

None of these
AD/V
π(=A/D²)
π/6(=V/D³)

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Mechanical Operations
The work index in Bond's law for crushing of solids has the following dimensions

KWh/ton
No units (dimensionless)
KWh.m1/2/ton
KW/ton

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Mechanical Operations
Cyclones are used primarily for separating

Solids from solids
Solids
Solids from fluids
Liquids

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