Mechanical Operations Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is 0.5 √2 1 √3 0.5 √2 1 √3 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Work index is defined as the Energy needed to crush one ton of feed to 100 microns Energy needed to crush one tonne of feed to 200 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 (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 Energy needed to crush one tonne of feed to 200 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 (kWh/ton of feed) needed to crush small feed to such a size that 80% of the product passes a 200 mesh screen ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The grinding in a hammer crusher takes place due to the Impact Both A & B Attrition Neither A nor B Impact Both A & B Attrition Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following gives the crushing energy required to create new surface ? Taggarts rule None of these Rittinger's law Fick's law Taggarts rule None of these Rittinger's law Fick's law 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 Fine Secondary Primary Ultrafine Fine Secondary ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For spheres, volume shape factor is given by AD/V π/6(=V/D³) 2π(=2A/D²) π(=A/D²) AD/V π/6(=V/D³) 2π(=2A/D²) π(=A/D²) ANSWER DOWNLOAD EXAMIANS APP
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