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 Gr0.25, Gr Gr0.25, Gr0.33 Gr0.33, Gr0.25 Gr, Gr0.25 Gr0.25, Gr Gr0.25, Gr0.33 Gr0.33, Gr0.25 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics The most detrimental impurity in high pressure boiler feed water is Silica Turbidity Suspended salt Dissolved salt Silica Turbidity Suspended salt Dissolved salt ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics A psychrometer does not measure the __________ temperature of moist air. Dry bulb Wet bulb None of these Dew point Dry bulb Wet bulb None of these Dew point ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Shaft/rotor speed is most accurately measured by a Tachometer Speedometer Frequency counter Strobometer Tachometer Speedometer Frequency counter Strobometer ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics If the head is doubled in & centrifugal pump, the power required will increase in the ratio of 25/2 23 21/3 23/2 25/2 23 21/3 23/2 ANSWER DOWNLOAD EXAMIANS APP
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