Chemical Engineering Basics Which of the following materials has the maximum shrinkage allowance ? Cast iron Lead Brass Aluminium alloy Cast iron Lead Brass Aluminium alloy 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 Scale formation rate on economiser tubes increases 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 Heat transfer efficiency of economiser increases due to picking up high heat from the flue gases Scale formation rate on economiser tubes increases 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Protection of ship hulls against sea water corrosion is done by coating with zinc because of the fact that zinc compared to iron is Reduced preferentially Lighter Oxidised preferentially Cheaper Reduced preferentially Lighter Oxidised preferentially Cheaper ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics The process of removal of scale formed during hot rolling of steel is termed as Pickling Skimming Descaling Shot blasting Pickling Skimming Descaling Shot blasting ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Thermal efficiency of an internal combustion engine is around __________ percent. 8 80 35 65 8 80 35 65 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Creep consideration is the most important in case of the Cycle chains Blades of gas turbines Cast iron pipes Steam engine flywheel Cycle chains Blades of gas turbines Cast iron pipes Steam engine flywheel ANSWER DOWNLOAD EXAMIANS APP