Mechanical Operations Ore concentration by jigging is based on the difference in the __________ of the particles. Wettability Specific gravities Shape None of these Wettability Specific gravities Shape None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Short distance transportation of grain, gravel, sand, ash, asphalt etc. is done by using a __________ conveyor. Ribbon Screw Flight Slat or drag Ribbon Screw Flight Slat or drag ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Close circuit grinding by a ball mill with air sweeping employs a Classifier Cyclone separator between mill & classifier Both A & B Neither A nor B Classifier Cyclone separator between mill & classifier Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is the gross energy (kWh/tonne of feed) necessary to reduce a very large feed to such a size that 80% of product particles will pass through a 0.1 mm screen. The value of work index determined for wet grinding should be multiplied with __________ to get the same for dry grinding. 1.34 4.34 1 0.5 1.34 4.34 1 0.5 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Pick out the wrong statement pertaining to the roll crushers. For hard material's crushing, the reduction ratio should not exceed 4 Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced Maximum feed size determines the required roll diameter Both the rolls run necessarily at the same speed For hard material's crushing, the reduction ratio should not exceed 4 Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced Maximum feed size determines the required roll diameter Both the rolls run necessarily at the same speed ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Gelatinous solid (which plug the septum) can be filtered by a __________ filter. Plate and frame Precoat Vacuum leaf Sparkler Plate and frame Precoat Vacuum leaf Sparkler ANSWER DOWNLOAD EXAMIANS APP
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