Mechanical Operations Ore concentration by jigging is based on the difference in the __________ of the particles. Shape Specific gravities Wettability None of these Shape Specific gravities Wettability None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Temperature of the product during ultrafine grinding May increase or decrease ; depends on the material being ground Decreases Increases Remains constant May increase or decrease ; depends on the material being ground Decreases Increases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rittinger's crushing law states that 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 a particular size is proportional to the square root of the surface to volume ratio of the 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 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 a particular size is proportional to the square root of the surface to volume ratio of the product Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The unit of specific cake resistance is Gm/cm² Cm/gm² Cm/gm Gm/gm Gm/cm² Cm/gm² Cm/gm Gm/gm ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following size reduction equipments employs mainly attrition for ultrafine grinding? Jet mills Micronizer All of these Fluid energy mill Jet mills Micronizer All of these Fluid energy mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond's law, Rittinger's law and Kick's law) depend upon the Type of crushing machine Feed material Neither A nor B Both A & B Type of crushing machine Feed material Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
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