Chemical Engineering Basics The predominant mode of heat transfer which takes place from boiler furnace to water walls of a boiler is Conduction Both A & B Radiation Convection Conduction Both A & B Radiation Convection ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics The weight of a body at the centre of the earth is Same as on the surface of the earth Infinite Zero None of these Same as on the surface of the earth Infinite Zero None of these 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 ? Heat transfer efficiency of economiser increases due to picking up high heat from the flue gases Economiser tube life increases due to handling of low temperature water 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 Heat transfer efficiency of economiser increases due to picking up high heat from the flue gases Economiser tube life increases due to handling of low temperature water 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Which of the following is a boiler accessory i.e., not a boiler mounting ? Feed check valve Blow off cock Stop valve Feed water pump Feed check valve Blow off cock Stop valve Feed water pump ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Lime contains about 90% CaO. Percentage CaO present in limestone is about 70 50 80 25 70 50 80 25 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Tempering of a material does not improve its Toughness Machinability Internal stress level Softness Toughness Machinability Internal stress level Softness ANSWER DOWNLOAD EXAMIANS APP
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