Mechanical Operations In case of a ball mill, None of these Coarse feed requires a larger ball Fine feed requires a larger ball Operating speed should be more than the critical speed None of these Coarse feed requires a larger ball Fine feed requires a larger ball Operating speed should be more than the critical speed 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 3.34 Wi 0.5 Wi 1.34 Wi Wi 3.34 Wi 0.5 Wi 1.34 Wi Wi ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Compressibility co-efficient for an absolutely compressible cake is 1 ∞ 0 to 1 1 ∞ 0 to 1 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Balls for ball mills are never made of Alloy steel Lead Forged/cast steel Cast iron Alloy steel Lead Forged/cast steel Cast iron ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Width and speed of a conveyor belt depends upon the __________ of the material. Bulk density Lump size Neither A nor B Both A & B Bulk density Lump size Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is defined as the Energy (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Energy needed to crush one ton of feed to 100 microns 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 (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen Energy needed to crush one ton of feed to 100 microns 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
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