Mechanical Operations The specific cake resistance for incompressible sludges is (where ΔP = pressure drop over cake) Independent of ΔP ∝ 1/ ΔP ∝ ΔP ∝ √ΔP Independent of ΔP ∝ 1/ ΔP ∝ ΔP ∝ √ΔP ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Capacity (in tons/hr) of jaw/gyratory crusher is equal to (where, L = length of the receiving opening, cm S = greater width of the discharge opening, cm) 0.087 L.S 0.01 L.S L.S/0.087 L.S 0.087 L.S 0.01 L.S L.S/0.087 L.S ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations All resistances during washing of cake None of these Increases Decreases Remain constant None of these Increases Decreases Remain constant ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Paddle agitator Moves at very high speed None of these Is suitable for mixing low viscosity liquids Produces axial flow Moves at very high speed None of these Is suitable for mixing low viscosity liquids Produces axial flow ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is 0.4 None of these 0.6 0.1 0.4 None of these 0.6 0.1 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Agglomeration of individual particles into clusters (flocs) is called flocculation. To prevent flocculation, the most commonly used dispersing agents are Sulphates Silicates & phosphates Bi-carbonates Carbonates Sulphates Silicates & phosphates Bi-carbonates Carbonates ANSWER DOWNLOAD EXAMIANS APP
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