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Mechanical Operations

Mechanical Operations
For the transportation of ultrafine particles, the equipment used is a........conveyor.

Pneumatic
Belt
Screw
None of these

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Mechanical Operations
__________ centrifuge is normally used in sugar mills.

Suspended batch basket
Tubular bowl
Perforated horizontal basket continuous
Disc-bowl

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Mechanical Operations
Kick's law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick's constant is

Kg/sec
KWh/sec. kg
KW. sec/kg
KWh/kg

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Mechanical Operations
In bag filters, filter fabrics are never made of

Metallic wire woven mesh
Nylon fibres
Cotton fibres
Polyester fibres

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Mechanical Operations
Ultrafine grinders operate principally by

Cutting action
Attrition
Impact
Slow compression

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Mechanical Operations
For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is

230
1125
460
2250

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