Mechanical Operations For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter (d) as √d 1/d D D² √d 1/d D D² ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations During the washing of cake Filter medium resistance increases All the resistances are constant Cake resistance decreases Filter medium resistance decreases Filter medium resistance increases All the resistances are constant Cake resistance decreases Filter medium resistance decreases ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For a turbine agitated and baffled tank, operating at low Reynold's number (based on impeller diameter), the power number (Np) varies with NRe as Np ∝ 1/NRe Np ∝ √NRe Np → constant Np ∝ NRe Np ∝ 1/NRe Np ∝ √NRe Np → constant Np ∝ NRe ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The specific surface of spherical particles is given by (where D and ρ are diameter and density of particle). 4/D.p 2/D.p 6/D.p 12/D.p 4/D.p 2/D.p 6/D.p 12/D.p ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The mechanism of size reduction by a hammer mill is by impact and attrition between the Grinding element & the housing Feed particles Both A & B Neither A nor B Grinding element & the housing Feed particles Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Specific surface area is the surface area of a unit __________ of materials. Either A or B Neither A nor B Volume Weight Either A or B Neither A nor B Volume Weight ANSWER DOWNLOAD EXAMIANS APP
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