Mechanical Operations Work index is defined as the Energy needed to crush one ton of feed to 100 microns Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen Energy needed to crush one tonne of feed to 200 microns Energy needed to crush one ton of feed to 100 microns Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Gross energy (kWh/ton of feed) needed to reduce very large feed to such a size that 80% of the product passes through a 100 micron screen Energy needed to crush one tonne of feed to 200 microns ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The cake resistance increases steadily with the time of filtration in a plate and frame filter employing constant __________ filtration. Both A & B Pressure Neither A nor B Rate Both A & B Pressure Neither A nor B Rate 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 N¹ N³ N° N² N¹ N³ N° N² ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of Cams or eccentric shafts Unblanced fly wheels Either A, B or C Electromagnets Cams or eccentric shafts Unblanced fly wheels Either A, B or C Electromagnets ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Ball mill is used for Crushing Attrition Coarse grinding Fine grinding Crushing Attrition Coarse grinding Fine grinding ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is a fine crusher? Blake jaw crusher Toothed roll crusher Dodge jaw crusher Gyratory crusher Blake jaw crusher Toothed roll crusher Dodge jaw crusher Gyratory crusher ANSWER DOWNLOAD EXAMIANS APP
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