Mechanical Operations In froth floatation, chemical agent added to cause air adherence is called Modifier Collector Frother Activator Modifier Collector Frother Activator ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is used for primary crushing of very hard lumpy materials? Tube mill Toothed roll crusher Ball mill Gyratory crusher Tube mill Toothed roll crusher Ball mill Gyratory crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific surface of spherical particles is given by (where D and ρ are diameter and density of particle). 6/D.p 4/D.p 12/D.p 2/D.p 6/D.p 4/D.p 12/D.p 2/D.p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is defined as the Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen Energy needed to crush one ton of feed to 100 microns Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Energy needed to crush one tonne of feed to 200 microns Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen Energy needed to crush one ton of feed to 100 microns Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Energy needed to crush one tonne of feed to 200 microns ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Coal is finally pulverised to 200 mesh size for burning in boilers by a Roll crusher Ball mill Gyratory crusher Hammer crusher Roll crusher Ball mill Gyratory crusher Hammer crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For sizing of fine materials, the most suitable equipment is a Grizzly Trommel Vibrating screen Shaking screen Grizzly Trommel Vibrating screen Shaking screen ANSWER DOWNLOAD EXAMIANS APP
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