Mechanical Operations Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is 1 0.5 √3 √2 1 0.5 √3 √2 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of Either A, B or C Electromagnets Unblanced fly wheels Cams or eccentric shafts Either A, B or C Electromagnets Unblanced fly wheels Cams or eccentric shafts ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In filtration, the use of 'filter aid' helps in Enhancing the cake porosity in case of a dense impermeable cake Deplugging the filter medium Accelerating the rate of filtration Reducing the filtration pressure Enhancing the cake porosity in case of a dense impermeable cake Deplugging the filter medium Accelerating the rate of filtration Reducing the filtration pressure ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For efficient grinding, ball mills must be operated With minimum possible small balls At a speed equal to the critical speed At a speed less than the critical speed At a speed more than the critical speed With minimum possible small balls At a speed equal to the critical speed At a speed less than the critical speed At a speed more than the critical speed 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 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 A filter press is Not suitable, if the liquid is the main product Having prohibitively high maintenance cost Not suitable for wide range of materials under varying operating conditions of cake thickness and pressure A batch filter Not suitable, if the liquid is the main product Having prohibitively high maintenance cost Not suitable for wide range of materials under varying operating conditions of cake thickness and pressure A batch filter ANSWER DOWNLOAD EXAMIANS APP
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