Mechanical Operations What is the selectivity index, if the grade of tailings & concentrate is the same? ∞ 0.5 1 ∞ 0.5 1 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the Heavy tonnages of rocks or gravel Dry chemicals Light metal powder down upto 4 meshsize Powdered food & granular materials Heavy tonnages of rocks or gravel Dry chemicals Light metal powder down upto 4 meshsize Powdered food & granular materials ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Tank filter (e.g., Nutsch filter) is Used for small scale filtration work A leaf filter A continuous filter A high pressure filter Used for small scale filtration work A leaf filter A continuous filter A high pressure filter ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Vibrating screens have capacity in the range of __________ tons/ft² .mm mesh size. 100 to 250 0.2 to 0.8 5 to 25 50 to 100 100 to 250 0.2 to 0.8 5 to 25 50 to 100 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The grinding in a hammer crusher takes place due to the Attrition Impact Neither A nor B Both A & B Attrition Impact Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to N³ N° N¹ N² N³ N° N¹ N² ANSWER DOWNLOAD EXAMIANS APP
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