Mechanical Operations Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids ( > 50000 centipoise)? Curved blade turbine Helical screw Propeller Flat blade turbine Curved blade turbine Helical screw Propeller Flat blade turbine ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is 0.68 0.5 0.58 0.62 0.68 0.5 0.58 0.62 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its Poor grindability None of these High power consumption in grinding Easier grindability Poor grindability None of these High power consumption in grinding Easier grindability ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Capacity (in tons/hr) of jaw/gyratory crusher is equal to (where, L = length of the receiving opening, cm S = greater width of the discharge opening, cm) 0.01 L.S L.S L.S/0.087 0.087 L.S 0.01 L.S L.S L.S/0.087 0.087 L.S ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is not categorised as a "mechanical operation"? Agitation Humidification Filtration Size enlargement Agitation Humidification Filtration Size enlargement ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ball mills and tube mills with flint or porcelain balls are used for size reduction of Limestone Asbestos Non-metallic ores Rubber Limestone Asbestos Non-metallic ores Rubber ANSWER DOWNLOAD EXAMIANS APP
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