Mechanical Operations For efficient grinding, ball mills must be operated At a speed equal to the critical speed At a speed more than the critical speed At a speed less than the critical speed With minimum possible small balls At a speed equal to the critical speed At a speed more than the critical speed At a speed less than the critical speed With minimum possible small balls ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the Dry chemicals Light metal powder down upto 4 meshsize Heavy tonnages of rocks or gravel Powdered food & granular materials Dry chemicals Light metal powder down upto 4 meshsize Heavy tonnages of rocks or gravel Powdered food & granular materials ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is not used as filter aid? Asbestos Diatomaceous earth Rice husk Purified wood cellulose Asbestos Diatomaceous earth Rice husk Purified wood cellulose ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively. 200°C and 5 atm 1000°C and 500 atm 500°C and 50 atm 1000°C and 10 atm 200°C and 5 atm 1000°C and 500 atm 500°C and 50 atm 1000°C and 10 atm ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A __________ employs a set of screen across a flow channel for the separation of dirt/rust from a flowing liquid stream. Clarifier Classifier Thickener Strainer Clarifier Classifier Thickener Strainer ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Crushing of mineral particles is accomplished in a 'cage mill', when one or more alloy steel bars are revolved in opposite directions. It is a type of __________ mill. None of these Vibratory Roll Impact None of these Vibratory Roll Impact ANSWER DOWNLOAD EXAMIANS APP
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