Mechanical Operations Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of Unblanced fly wheels Either A, B or C Electromagnets Cams or eccentric shafts Unblanced fly wheels Either A, B or C Electromagnets Cams or eccentric shafts ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Grinding efficiency of a ball mill is of the order of __________ percent. 43835 40-50 75-80 90-95 43835 40-50 75-80 90-95 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific surface of sherical particles is proportional to (where, Dp = diameter of particle). D²p Dp 1/Dp 1/D²p D²p Dp 1/Dp 1/D²p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of __________ crushing. Ultrafine Fine Secondary Primary Ultrafine Fine Secondary Primary ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator? Sodium carbonate Calcium carbonate Cresylic acid Copper sulphate Sodium carbonate Calcium carbonate Cresylic acid Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Paddle agitator Produces axial flow Moves at very high speed None of these Is suitable for mixing low viscosity liquids Produces axial flow Moves at very high speed None of these Is suitable for mixing low viscosity liquids ANSWER DOWNLOAD EXAMIANS APP
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