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'? Flight conveyor Screw conveyor Bucket conveyor Both B and C Flight conveyor Screw conveyor Bucket conveyor Both B and C ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In froth floatation, chemical agent added to cause air adherence is called Activator Collector Modifier Frother Activator Collector Modifier Frother ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Helical screw agitator is used for None of these Mixing liquids at very high temperature (> 250 °C) Blending immiscible liquids Mixing highly viscous pastes None of these Mixing liquids at very high temperature (> 250 °C) Blending immiscible liquids Mixing highly viscous pastes ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Size reduction of the __________ can be suitably done by ball mills, crushing rolls and rod mills. Asbestos & mica Non-metallic ores Metalliferrous ores Basic slags Asbestos & mica Non-metallic ores Metalliferrous ores Basic slags ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The energy required per unit mass to grind limestone particles of very large size to 100 μm is 12.7 kWh/ton. An estimate (using Bond's law) of the energy to grind the particles from a very large size to 50 μrn is 6.35 kWh/ton 18 kWh/ton 25.4 kWh/ton 9.0 kWh/ton 6.35 kWh/ton 18 kWh/ton 25.4 kWh/ton 9.0 kWh/ton ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Reduction ratio of crushers is the None of these Ratio of discharge opening to feed opening Ratio of feed opening to discharge opening Determining factor for minimum dia of the feed and the product None of these Ratio of discharge opening to feed opening Ratio of feed opening to discharge opening Determining factor for minimum dia of the feed and the product ANSWER DOWNLOAD EXAMIANS APP
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