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Mechanical Operations

Mechanical Operations
Out of the following size reduction equipments, the maximum feed size can be accepted by the

Jet pulveriser
Jaw crusher
Ball mill
Tube mill

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Mechanical Operations
Colloid mills achieve size reduction mainly by

Cutting
Attrition
Compression
Impact

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

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

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Mechanical Operations
Which is the most suitable conveyor for transportation of sticky material?

Apron conveyor
Belt conveyor
Pneumatic conveyor
Screw conveyor

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Mechanical Operations
The porosity of a compressible cake is

Minimum at the filter medium
Same throughout the thickness of cake
Maximum at the filter medium
Minimum at the upstream face

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Mechanical Operations
Gummy & sticky materials like molasses, sugar etc. are best transported/handled by using a __________ conveyor.

Screw
Slat
Ribbon
Drag

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