Mechanical Operations Reciprocating screens are normally inclined at an angle of 5° with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the Dry chemicals Heavy tonnages of rocks or gravel Powdered food & granular materials Light metal powder down upto 4 meshsize Dry chemicals Heavy tonnages of rocks or gravel Powdered food & granular materials Light metal powder down upto 4 meshsize ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Helical screw agitator is used for Mixing liquids at very high temperature (> 250 °C) Mixing highly viscous pastes Blending immiscible liquids None of these Mixing liquids at very high temperature (> 250 °C) Mixing highly viscous pastes Blending immiscible liquids None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The speed of a rotary drum vacuum filter may be about __________ rpm. 500 1 50 100 500 1 50 100 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filtration rate through a filter cake is proportional to (where, S = filtering surface R = specific cake resistance μ = viscosity of the filtrate) 1/μ 1/R All of these S 1/μ 1/R All of these S ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of 'scrappers'? Both B and C Flight conveyor Screw conveyor Bucket conveyor Both B and C Flight conveyor Screw conveyor Bucket conveyor 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. Neither A nor B Both A & B Pressure Rate Neither A nor B Both A & B Pressure Rate ANSWER DOWNLOAD EXAMIANS APP
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