Mechanical Operations Work index is defined as the 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 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 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Crushing efficiency of a machine ranges between __________ percent. 0.1 to 2 50 to 70 5 to 10 20 to 25 0.1 to 2 50 to 70 5 to 10 20 to 25 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Trommels separate a mixture of particles depending on their Density Electrical & magnetic properties Size Wettability Density Electrical & magnetic properties Size Wettability ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A straight line is obtained on plotting reciprocal of filtration rate vs. the volume of filtrate for __________ flow of filtrate. Incompressible cake and turbulent Compressible cake and turbulent Compressible cakes and laminar Incompressible cake and laminar Incompressible cake and turbulent Compressible cake and turbulent Compressible cakes and laminar Incompressible cake and laminar ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In the cyclone separator used for separation of dust from dust laden gas, the gas Enters the cyclone from the top Both B and C Develops a helical motion inside the chamber Is admitted tangentially at high velocity Enters the cyclone from the top Both B and C Develops a helical motion inside the chamber Is admitted tangentially at high velocity ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For removal of very small amounts of precipitate from large volume of water, the most suitable filter is the __________ filter. Sand Plate & frame Rotary vacuum Shell & leaf Sand Plate & frame Rotary vacuum Shell & leaf ANSWER DOWNLOAD EXAMIANS APP
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