Mechanical Operations For spheres, the specific surface shape factor is given by A/V AD/V √(AD/V) D/V A/V AD/V √(AD/V) D/V ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Crushing efficiency of a machine ranges between __________ percent. 20 to 25 0.1 to 2 5 to 10 50 to 70 20 to 25 0.1 to 2 5 to 10 50 to 70 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Close circuit grinding by a ball mill with air sweeping employs a Classifier Both A & B Neither A nor B Cyclone separator between mill & classifier Classifier Both A & B Neither A nor B Cyclone separator between mill & classifier 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 6.35 kWh/ton 25.4 kWh/ton 18 kWh/ton 9.0 kWh/ton 6.35 kWh/ton 25.4 kWh/ton 18 kWh/ton ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations If radius of a batch basket centrifuge is halved & the r.p.m. is doubled, then the Linear speed of the basket is doubled Linear speed of the basket is halved Centrifugal force is doubled Capacity of centrifuge is increased Linear speed of the basket is doubled Linear speed of the basket is halved Centrifugal force is doubled Capacity of centrifuge is increased ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The capacity of a belt conveyor depends upon two factors. If one is the cross-section of the load, the other is the __________ of the belt. Speed None of these Thickness Length Speed None of these Thickness Length ANSWER DOWNLOAD EXAMIANS APP
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