Chemical Engineering Basics Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as Gr, Gr0.25 Gr0.33, Gr0.25 Gr0.25, Gr0.33 Gr0.25, Gr Gr, Gr0.25 Gr0.33, Gr0.25 Gr0.25, Gr0.33 Gr0.25, Gr ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Free oxygen is removed from boiler feed water, because it Is corrosive Reduces heat transfer co-efficient None of these Causes explosion Is corrosive Reduces heat transfer co-efficient None of these Causes explosion ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Corrosion rate can not be lowered by reducing the __________ of the corroding medium. None of these Temperature Velocity Concentration None of these Temperature Velocity Concentration ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Friction factor for fluid flow in pipe does not depend upon the Mass flow rate of fluid Fluid density & viscosity Pipe length Pipe roughness Mass flow rate of fluid Fluid density & viscosity Pipe length Pipe roughness ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics What is the effect on the performance of the economiser in the thermal power plant boiler, if the feed water temperature is very low due to preheaters being out for repairs or starving of steam supply ? Scale formation rate on economiser tubes increases Economiser tube life increases due to handling of low temperature water Heat transfer efficiency of economiser increases due to picking up high heat from the flue gases It results in corrosion due to the condensation on the flue gas side of the economiser tubes due to handling of low temperature water Scale formation rate on economiser tubes increases Economiser tube life increases due to handling of low temperature water Heat transfer efficiency of economiser increases due to picking up high heat from the flue gases It results in corrosion due to the condensation on the flue gas side of the economiser tubes due to handling of low temperature water ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following : Mixture of water and air Jet of water at high pressure Rain of molten lead Blast of air Mixture of water and air Jet of water at high pressure Rain of molten lead Blast of air ANSWER DOWNLOAD EXAMIANS APP
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