Mechanical Operations In a size reduction crushing operation, feed size is 100 to 300 mm. while the product size is 10 to 50 mm. This is a case of the __________ crushing. Primary Ultrafine Fine Secondary Primary Ultrafine Fine Secondary ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The energy consumed by a ball mill depends on All of these Its ball load Its speed The density of the material being ground All of these Its ball load Its speed The density of the material being ground ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sphericity of raschig ring (whose length and diameter are equal) is >1 1 2 >1 1 2 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For spheres, the specific surface shape factor is given by √(AD/V) A/V AD/V D/V √(AD/V) A/V AD/V D/V 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 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 Wet grinding in low viscous suspension ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A gravity decanter is meant for the separation of two __________ density. Immiscible liquids of same Miscible liquids of same Miscible liquids of different Immiscible liquids of different Immiscible liquids of same Miscible liquids of same Miscible liquids of different Immiscible liquids of different ANSWER DOWNLOAD EXAMIANS APP
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