Mechanical Operations For efficient grinding, ball mills must be operated With minimum possible small balls At a speed less than the critical speed At a speed more than the critical speed At a speed equal to the critical speed With minimum possible small balls At a speed less than the critical speed At a speed more than the critical speed At a speed equal to the critical speed ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Horsepower required for a roll crusher is directly proportional to its Reduction ratio Capacity Neither A nor B Both A & B Reduction ratio Capacity Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a hammer crusher, the final product size depends on the Clearance between hammer & grinding plates All of these Rotor speed Feed rate Clearance between hammer & grinding plates All of these Rotor speed Feed rate ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is a fine crusher? Dodge jaw crusher Blake jaw crusher Gyratory crusher Toothed roll crusher Dodge jaw crusher Blake jaw crusher Gyratory crusher Toothed roll crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Crushing efficiency is the ratio of the Energy absorbed by the solid to the surface energy created by crushing Energy fed to the machine to the surface energy created by crushing Energy absorbed by the solid to that fed to the machine Surface energy created by crushing to the energy absorbed by the solid Energy absorbed by the solid to the surface energy created by crushing Energy fed to the machine to the surface energy created by crushing Energy absorbed by the solid to that fed to the machine Surface energy created by crushing to the energy absorbed by the solid ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations With increase in drum speed, in a rotary drum filter, the filtration rate Is not affected Increases linearly Decreases Increases Is not affected Increases linearly Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
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