Chemical Engineering Basics When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively Decreases & increases Increases & increases Increases & decreases Decreases & decreases Decreases & increases Increases & increases Increases & decreases Decreases & decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics The property of material, by which a given amount of energy is absorbed by it, without plastic deformation is called Impact strength Ductility Toughness Resilience Impact strength Ductility Toughness Resilience ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics If the head is doubled in & centrifugal pump, the power required will increase in the ratio of 21/3 23 25/2 23/2 21/3 23 25/2 23/2 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 ? It results in corrosion due to the condensation on the flue gas side of the economiser tubes due to handling of low temperature water Economiser tube life increases 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 It results in corrosion due to the condensation on the flue gas side of the economiser tubes due to handling of low temperature water Economiser tube life increases 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Materials having __________ lattice structure are usually the most ductile. Face centred cubic (fcc) Hexagonal close packed (hcp) None of these Body centred cubic (bcc) Face centred cubic (fcc) Hexagonal close packed (hcp) None of these Body centred cubic (bcc) ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics A polymer is termed as an 'elastomer', if its percentage elongation is more than 100%. An elastomer is termed as 'rubber' if its percentage elongation is more than __________ percent. 300 400 200 150 300 400 200 150 ANSWER DOWNLOAD EXAMIANS APP
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