Mechanical Operations According to Bond crushing law, the work required to form particle of size 'D' from very large feed is (where (S/V)p and (S/V)f are surface to volume ratio of the product and feed respectively). (S/V)²p (S/V)f √(S/V)p (S/V)p (S/V)²p (S/V)f √(S/V)p (S/V)p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations __________ is the most commonly used 'filter aid'. Semi-plastic clay Diatomaceous earth Vermiculite Fuller's earth Semi-plastic clay Diatomaceous earth Vermiculite Fuller's earth ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle. and, D = equivalent diameter of particle). S/V V/D.S 6.V/D.S V/6D.S S/V V/D.S 6.V/D.S V/6D.S ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The most suitable equipment for removing the fine dust particle (< 1 micron dia.) from air below its dew point will be a/an Wet scrubber Electrostatic precipitator Cyclone separator Bag filter Wet scrubber Electrostatic precipitator Cyclone separator Bag filter ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following mechanical conveyors does not come under the division 'carriers'? Apron conveyor Belt conveyor Bucket elevator Screw conveyor Apron conveyor Belt conveyor Bucket elevator Screw conveyor ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond's law) of the energy to grind the particles from a very large size to 50 μrn is 9.0 kWh/ton 18 kWh/ton 25.4 kWh/ton 6.35 kWh/ton 9.0 kWh/ton 18 kWh/ton 25.4 kWh/ton 6.35 kWh/ton ANSWER DOWNLOAD EXAMIANS APP
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