Mechanical Operations Work index is defined as the Energy needed to crush one tonne of feed to 200 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 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 needed to crush one tonne of feed to 200 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 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 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The work index in Bond's law for crushing of solids has the following dimensions KWh/ton KWh.m1/2/ton No units (dimensionless) KW/ton KWh/ton KWh.m1/2/ton No units (dimensionless) KW/ton ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Addition of filter aid to the slurry before filtration is done to ...... of the cake. Increase the porosity Increase the compressibility co-efficient Decrease the porosity Decrease the compressibility co-efficient Increase the porosity Increase the compressibility co-efficient Decrease the porosity Decrease the compressibility co-efficient ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A tube mill as compared to a ball mill Employs smaller balls Has larger length/diameter ratio (>2 as compared to 1 for ball mill) All of these Gives finer size reduction but consumes more power Employs smaller balls Has larger length/diameter ratio (>2 as compared to 1 for ball mill) All of these Gives finer size reduction but consumes more power ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sorting classifiers employing differential settling methods for separation of particles make use of the differences in their Terminal velocities Densities Particle sizes None of these Terminal velocities Densities Particle sizes None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Mesh indicates the number of holes per Square foot Square inch Linear inch Linear foot Square foot Square inch Linear inch Linear foot ANSWER DOWNLOAD EXAMIANS APP