Mechanical Operations Coal is finally pulverised to 200 mesh size for burning in boilers by a Gyratory crusher Ball mill Hammer crusher Roll crusher Gyratory crusher Ball mill Hammer crusher Roll crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Electrical energy consumed by a jaw crusher is not a function of the Average product size Average feed size Machine capacity None of these Average product size Average feed size Machine capacity None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Equivalent diameter of a particle is the diameter of the sphere having the same Volume as the particle None of these Ratio of surface to volume as the actual volume Ratio of volume to surface as the particle Volume as the particle None of these Ratio of surface to volume as the actual volume Ratio of volume to surface as the particle ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is 0.4 None of these 0.1 0.6 0.4 None of these 0.1 0.6 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is Precoated on the filter medium prior to filtration All of these Separated from the cake by dissolving solids or by burning it off Added to the feed slurry Precoated on the filter medium prior to filtration All of these Separated from the cake by dissolving solids or by burning it off Added to the feed slurry ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively. 200°C and 5 atm 500°C and 50 atm 1000°C and 10 atm 1000°C and 500 atm 200°C and 5 atm 500°C and 50 atm 1000°C and 10 atm 1000°C and 500 atm ANSWER DOWNLOAD EXAMIANS APP
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