Mechanical Operations Ball mill is used for Attrition Fine grinding Crushing Coarse grinding Attrition Fine grinding Crushing Coarse grinding ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is 2250 230 1125 460 2250 230 1125 460 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The opening of a 200 mesh screen (Taylor series) is 0.0047 cm 74 mili-microns 0.0074 mm 0.0074 cm 0.0047 cm 74 mili-microns 0.0074 mm 0.0074 cm ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Actual operating speed of a ball mill may vary from 65 to 80% of the critical speed. Which of the following duties would require the ball mill to be operated at maximum percentage of critical speed? Wet grinding in high viscous suspension Dry grindng of large particles in un-baffed mills Dry grinding of large particles (upto 1.25 cms) Wet grinding in low viscous suspension Wet grinding in high viscous suspension Dry grindng of large particles in un-baffed mills Dry grinding of large particles (upto 1.25 cms) Wet grinding in low viscous suspension ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Addition of filter aid to the slurry before filtration is done to ...... of the cake. Increase the porosity Decrease the porosity Decrease the compressibility co-efficient Increase the compressibility co-efficient Increase the porosity Decrease the porosity Decrease the compressibility co-efficient Increase the compressibility co-efficient ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of __________ mm. 0.007 0.3 50 0.014 0.007 0.3 50 0.014 ANSWER DOWNLOAD EXAMIANS APP
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