Mechanical Operations Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of Stainless steel Concrete Flint or porcelain Bronze Stainless steel Concrete Flint or porcelain Bronze ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Helical screw agitator is used for None of these Blending immiscible liquids Mixing highly viscous pastes Mixing liquids at very high temperature (> 250 °C) None of these Blending immiscible liquids Mixing highly viscous pastes Mixing liquids at very high temperature (> 250 °C) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake) ∝ √ΔP ∝ ΔP ∝ 1/ ΔP Independent of ΔP ∝ √ΔP ∝ ΔP ∝ 1/ ΔP Independent of ΔP ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A cottrel precipitator makes use of the __________ for dusty air cleaning. Alternating current Electric spark None of these Corrona discharge Alternating current Electric spark None of these Corrona discharge ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Separation of particles of various sizes, shapes and densities by allowing them to settle in a fluid is called Froth floatation Thickening Classification Clarification Froth floatation Thickening Classification Clarification ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Filtration should be stopped in a filter press, if the Filtration pressure rises suddenly Cake becomes very dense Both A & B Liquor stops flowing out to the discharge Filtration pressure rises suddenly Cake becomes very dense Both A & B Liquor stops flowing out to the discharge ANSWER DOWNLOAD EXAMIANS APP
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