Mechanical Operations During agitation of liquids, the Froude number is independent for the curves between power number and Reynolds number in baffled system All of these Froude number is used to account for the effect of surface (e.g., the centre vortex) on the power number Power number becomes independent of impellers Reynolds number at high Reynolds number, but is dependent on the geometry of the impeller Froude number is independent for the curves between power number and Reynolds number in baffled system All of these Froude number is used to account for the effect of surface (e.g., the centre vortex) on the power number Power number becomes independent of impellers Reynolds number at high Reynolds number, but is dependent on the geometry of the impeller ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill. Hammer Cage Neither A nor B Both A & B Hammer Cage Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m² V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.ρ = density of solids, kg/m³) 3.6 AVS.ρ 3.6 A.V.ρ 3.6 A.S. ρ 3.6 AVS/ρ 3.6 AVS.ρ 3.6 A.V.ρ 3.6 A.S. ρ 3.6 AVS/ρ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In the cyclone separator used for separation of dust from dust laden gas, the gas Is admitted tangentially at high velocity Develops a helical motion inside the chamber Enters the cyclone from the top Both B and C Is admitted tangentially at high velocity Develops a helical motion inside the chamber Enters the cyclone from the top Both B and C 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 Carbonates Silicates & phosphates Sulphates Bi-carbonates Carbonates Silicates & phosphates Sulphates Bi-carbonates ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The equivalent diameter of channel of a constant non-circular cross-section of 3 cm by 6 cm will be __________ cms. 12 20 2 8 12 20 2 8 ANSWER DOWNLOAD EXAMIANS APP
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