Mechanical Operations Rod mills employed for grinding All of these Employ steel rods of 2-12 cms diameter extending over full length of the mill Employ a steel shell having L/D ratio of 1.5 to 3.0 Is useful for handling sticky materials All of these Employ steel rods of 2-12 cms diameter extending over full length of the mill Employ a steel shell having L/D ratio of 1.5 to 3.0 Is useful for handling sticky materials ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Wet grinding in a revolving mill __________ as compared to dry grinding. Requires more energy Complicates handling of the product Gives less wear on chamber walls Increases capacity Requires more energy Complicates handling of the product Gives less wear on chamber walls Increases capacity ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following oxides is not present in hematite iron ore? Cobalt oxide Calcium oxide Titanium oxide Manganese oxide Cobalt oxide Calcium oxide Titanium oxide Manganese oxide ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripherial velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m³ here, V =πN.D where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m) 3.6 V.W.Dr/ρ 3.6 V.W. ρ 3.6 V.W.Dr.ρ 3.6 W.Dr.ρ 3.6 V.W.Dr/ρ 3.6 V.W. ρ 3.6 V.W.Dr.ρ 3.6 W.Dr.ρ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following mineral dressing operations is termed as 'comminution'? Panning Spiralling None of these Tabling Panning Spiralling None of these Tabling ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Vacuum filter is most suitable for the None of these Removal of fines from liquid Liquids having high vapour pressure Liquids of very high viscosity None of these Removal of fines from liquid Liquids having high vapour pressure Liquids of very high viscosity ANSWER DOWNLOAD EXAMIANS APP
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