Mechanical Operations Ore concentration by jigging is based on the difference in the __________ of the particles. None of these Wettability Shape Specific gravities None of these Wettability Shape Specific gravities ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In a grinding operation, the limiting particle size is the size of the __________ particle in the sample. Neither A nor B Either A or B Smallest Largest Neither A nor B Either A or B Smallest Largest ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake) ∝ 1/ ΔP ∝ ΔP Independent of ΔP ∝ √ΔP ∝ 1/ ΔP ∝ ΔP Independent of ΔP ∝ √ΔP ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following gives the work required for size reduction of coal to -200 mesh in a ball mill most accurately ? None of these Rittinger's law Kick's law Bond's law None of these Rittinger's law Kick's law Bond's law ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond's law, Rittinger's law and Kick's law) depend upon the Type of crushing machine Feed material Both A & B Neither A nor B Type of crushing machine Feed material Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Balls for ball mills are never made of Alloy steel Forged/cast steel Lead Cast iron Alloy steel Forged/cast steel Lead Cast iron ANSWER DOWNLOAD EXAMIANS APP
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