Mechanical Operations The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the Gravity settling chamber Electro-static precipitator Venturi atomiser Cyclone separator Gravity settling chamber Electro-static precipitator Venturi atomiser Cyclone separator ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is 2 1.5 √3 √2 2 1.5 √3 √2 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is not a wet classifier? None of these Dorr Oliver rake classifier Sharpies supercentrifuge Hydrocyclones None of these Dorr Oliver rake classifier Sharpies supercentrifuge Hydrocyclones ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific surface of sherical particles is proportional to (where, Dp = diameter of particle). 1/D²p D²p Dp 1/Dp 1/D²p D²p Dp 1/Dp ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations At low Reynold's number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5 : Power number Re = ρ N D2/μ: Reynold's number N is the impeller rotational speed, and D is the impeller diameter. Po ∝ Re0.0 Po ∝ Re-1.0 Po ∝ Re0.5 Po ∝ Re1.0 Po ∝ Re0.0 Po ∝ Re-1.0 Po ∝ Re0.5 Po ∝ Re1.0 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The critical speed of a trommel (N) is related to its dia (D) as N ∝ √D N ∝ 1/√D N ∝ D N ∝ 1/D N ∝ √D N ∝ 1/√D N ∝ D N ∝ 1/D ANSWER DOWNLOAD EXAMIANS APP
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