Mechanical Operations Wet grinding in a revolving mill __________ as compared to dry grinding. Complicates handling of the product Requires more energy Gives less wear on chamber walls Increases capacity Complicates handling of the product Requires more energy Gives less wear on chamber walls Increases capacity ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Electrical energy consumed by a jaw crusher is not a function of the Average feed size Average product size None of these Machine capacity Average feed size Average product size None of these Machine capacity ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to __________ and the cycle time (where, μ = filtrate viscosity Rm = filter medium resistance Rc = cake resistance ). √μ 1/μ 1/μ² 1/√μ √μ 1/μ 1/μ² 1/√μ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill. Cage Hammer Neither A nor B Both A & B Cage Hammer Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be 1.34 Wi 0.5 Wi 3.34 Wi Wi 1.34 Wi 0.5 Wi 3.34 Wi Wi ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rittinger's crushing law states that For a given machine and feed, crushing efficiency is dependent on the size of the feed & product Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product Work required to form a particle of a particular size is proportional to the square root of the surface to volume ratio of the product Work required in crushing is proportional to the new surface created For a given machine and feed, crushing efficiency is dependent on the size of the feed & product Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product Work required to form a particle of a particular size is proportional to the square root of the surface to volume ratio of the product Work required in crushing is proportional to the new surface created ANSWER DOWNLOAD EXAMIANS APP
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