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. Secondary Primary Ultrafine Fine Secondary Primary Ultrafine Fine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For efficient grinding, ball mills must be operated At a speed equal to the critical speed At a speed less than the critical speed With minimum possible small balls At a speed more than the critical speed At a speed equal to the critical speed At a speed less than the critical speed With minimum possible small balls At a speed more than the critical speed ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For a turbine agitated and baffled tank, operating at low Reynold's number (based on impeller diameter), the power number (Np) varies with NRe as Np ∝ NRe Np ∝ 1/NRe Np ∝ √NRe Np → constant Np ∝ NRe Np ∝ 1/NRe Np ∝ √NRe Np → constant ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids ( > 50000 centipoise)? Curved blade turbine Flat blade turbine Propeller Helical screw Curved blade turbine Flat blade turbine Propeller Helical screw ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Addition of filter aid to the slurry before filtration is done to ...... of the cake. Decrease the porosity Decrease the compressibility co-efficient Increase the compressibility co-efficient Increase the porosity Decrease the porosity Decrease the compressibility co-efficient Increase the compressibility co-efficient Increase the porosity ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Size reduction does not occur due to compression in case of Smooth roll crushers Jaw crushers Rod mills Gyratory crushers Smooth roll crushers Jaw crushers Rod mills Gyratory crushers ANSWER DOWNLOAD EXAMIANS APP
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