Mechanical Operations What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls? 1 2.76 0.66 0.5 1 2.76 0.66 0.5 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The sphericity of a cylinder of 1 mm diameter and length 3 mm is 0.9 0.78 0.5 0.6 0.9 0.78 0.5 0.6 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Froth floatation is the most suitable for treating None of these Iron ores Sulphide ores Quartzite None of these Iron ores Sulphide ores Quartzite ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to None of these The new surface created The change in volume due to crushing The size reduction ratio None of these The new surface created The change in volume due to crushing The size reduction ratio ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ball mill is used for Attrition Crushing Fine grinding Coarse grinding Attrition Crushing Fine grinding Coarse grinding ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Horsepower required for a roll crusher is directly proportional to its Reduction ratio Neither A nor B Capacity Both A & B Reduction ratio Neither A nor B Capacity Both A & B ANSWER DOWNLOAD EXAMIANS APP
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