Mechanical Operations In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced. Tailing None of these Concentrate Middling Tailing None of these Concentrate Middling ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A widely used size reduction equipment for __________ is Bradford breaker. Iron core Wheat Coal Talc Iron core Wheat Coal Talc ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Screen capacity is not a function of Screening surface Its openings size Atmospheric humidity Screening mechanism Screening surface Its openings size Atmospheric humidity Screening mechanism 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 Neither A nor B Both A & B Feed material Type of crushing machine Neither A nor B Both A & B Feed material Type of crushing machine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity? Sphere Cylinder (L/D = 1) Raschig rings Cube Sphere Cylinder (L/D = 1) Raschig rings Cube ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of Flint or porcelain Bronze Concrete Stainless steel Flint or porcelain Bronze Concrete Stainless steel ANSWER DOWNLOAD EXAMIANS APP
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