Mechanical Operations The mechanism of size reduction by a hammer mill is by impact and attrition between the Neither A nor B Feed particles Both A & B Grinding element & the housing Neither A nor B Feed particles Both A & B Grinding element & the housing ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In a size reduction crushing operation, feed size is 100 to 300 mm. while the product size is 10 to 50 mm. This is a case of the __________ crushing. Primary Ultrafine Secondary Fine Primary Ultrafine Secondary Fine 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 0.5 Wi 1.34 Wi 3.34 Wi Wi 0.5 Wi 1.34 Wi 3.34 Wi Wi 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 Increases capacity Gives less wear on chamber walls Requires more energy Complicates handling of the product Increases capacity Gives less wear on chamber walls ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Pine oil and cresylic acid are used as __________ in the froth floatation process. Depressor Collector Conditioner Frother Depressor Collector Conditioner Frother ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Optimum ratio of operating speed to critical speed of a trommel is 1.33-1.45 1.5-2.5 0.5-2 0.33-0.45 1.33-1.45 1.5-2.5 0.5-2 0.33-0.45 ANSWER DOWNLOAD EXAMIANS APP
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