Mechanical Operations A cottrel precipitator makes use of the __________ for dusty air cleaning. Electric spark Alternating current None of these Corrona discharge Electric spark Alternating current None of these Corrona discharge ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Addition of filter aid to the slurry before filtration is done to ...... of the cake. Increase the porosity Decrease the porosity Decrease the compressibility co-efficient Increase the compressibility co-efficient Increase the porosity Decrease the porosity Decrease the compressibility co-efficient Increase the compressibility co-efficient ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A pebble mill Is a tube mill lined with ceramic or other non-metallic liner Employs flints or ceramic pebbles as the grinding medium Is a ball mill Both B and C Is a tube mill lined with ceramic or other non-metallic liner Employs flints or ceramic pebbles as the grinding medium Is a ball mill Both B and C ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is not a non-metalliferous mineral? Fluorspar Cassiterrite Calcite Quartz Fluorspar Cassiterrite Calcite Quartz ANSWER DOWNLOAD EXAMIANS APP
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 The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size ) S/c C/s S . c 1/s . c S/c C/s S . c 1/s . c ANSWER DOWNLOAD EXAMIANS APP
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