Mechanical Operations Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill ) 1/D2.5 D2.5 1/D D 1/D2.5 D2.5 1/D D ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The critical speed of a trommel (N) is related to its dia (D) as N ∝ √D N ∝ D N ∝ 1/√D N ∝ 1/D N ∝ √D N ∝ D N ∝ 1/√D N ∝ 1/D ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The process opposite to 'dispersion' is termed as the Flocculation None of these Filtration Sedimentation Flocculation None of these Filtration Sedimentation ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator? Calcium carbonate Copper sulphate Cresylic acid Sodium carbonate Calcium carbonate Copper sulphate Cresylic acid Sodium carbonate 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 Wi 0.5 Wi 3.34 Wi 1.34 Wi Wi 0.5 Wi 3.34 Wi 1.34 Wi ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filtration rate does not depend upon the Properties of the cake & the filtrate Resistance of the cake & the septum None of these Pressure drop & area of filtering surface Properties of the cake & the filtrate Resistance of the cake & the septum None of these Pressure drop & area of filtering surface ANSWER DOWNLOAD EXAMIANS APP
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