Mechanical Operations What is the usual value of angle of nip for crushing of ordinary rock in smooth steel crushing rolls? 46° 16° 40° 32° 46° 16° 40° 32° ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations All resistances during washing of cake Decreases Increases Remain constant None of these Decreases Increases Remain constant None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ball mill is used for Coarse grinding Attrition Fine grinding Crushing Coarse grinding Attrition Fine grinding Crushing 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 0.62 0.5 0.68 0.58 0.62 0.5 0.68 0.58 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations During size reduction by a jaw crusher, the energy consumed decreases with the Decreasing size of product at constant size of feed Increasing size of feed at constant reduction ratio None of these Decreasing machine capacity Decreasing size of product at constant size of feed Increasing size of feed at constant reduction ratio None of these Decreasing machine capacity ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Use of grinding aids results in the Neither A nor B Both A & B Finer products Enhanced production rate Neither A nor B Both A & B Finer products Enhanced production rate ANSWER DOWNLOAD EXAMIANS APP
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