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 low viscous suspension Wet grinding in high viscous suspension Dry grinding of large particles (upto 1.25 cms) Dry grindng of large particles in un-baffed mills Wet grinding in low viscous suspension Wet grinding in high viscous suspension Dry grinding of large particles (upto 1.25 cms) Dry grindng of large particles in un-baffed mills ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a plate and frame filter press, filtrate flow through the cake follows __________ flow. Turbulent None of these Plug Laminar Turbulent None of these Plug Laminar ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Jigging is a technique by which different particles can be Mixed Separated by particle shape Separated by particle density Separated by particle size Mixed Separated by particle shape Separated by particle density Separated by particle size ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the usual value of angle of nip for crushing of ordinary rock in smooth steel crushing rolls? 40° 32° 16° 46° 40° 32° 16° 46° ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For spheres, the specific surface shape factor is given by A/V D/V AD/V √(AD/V) A/V D/V AD/V √(AD/V) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The crushed material received for separation is called feed or Concentrate Middling Heading Tailing Concentrate Middling Heading Tailing ANSWER DOWNLOAD EXAMIANS APP
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