Mechanical Operations Pick out the wrong statement pertaining to the roll crushers. Both the rolls run necessarily at the same speed Maximum feed size determines the required roll diameter Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced For hard material's crushing, the reduction ratio should not exceed 4 Both the rolls run necessarily at the same speed Maximum feed size determines the required roll diameter Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced For hard material's crushing, the reduction ratio should not exceed 4 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? Cylinder (L/D = 1) Cube Raschig rings Sphere Cylinder (L/D = 1) Cube Raschig rings Sphere ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The crushed material received for separation is called feed or Heading Tailing Middling Concentrate Heading Tailing Middling Concentrate 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
Mechanical Operations Sulphuric acid mist is arrested by using a __________ scrubber. Hollow wet Packed wet Venturi Co-current Hollow wet Packed wet Venturi Co-current ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following screens has the maximum capacity? Shaking screen Grizzlies Vibrating screen Trommels Shaking screen Grizzlies Vibrating screen Trommels ANSWER DOWNLOAD EXAMIANS APP
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