Heat Transfer In a shell and tube heat exchanger, square pitch compared to triangular pitch Can pack more surface area into a shell of given diameter None of these Gives a lower shell side pressure drop Gives a higher shell side pressure drop Can pack more surface area into a shell of given diameter None of these Gives a lower shell side pressure drop Gives a higher shell side pressure drop ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall heat transfer co-efficient for cooling of hydrocarbons by water is about 1000 - 1500 BTU/hr. ft.2°F 50 -100 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 Kcal/hr.m².°C 1000 - 1500 BTU/hr. ft.2°F 50 -100 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 Kcal/hr.m².°C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a refrigerator (COP)R and the co-efficient of performance as a heat pump (COP)HP are (COP)R = 2.5; (COP)HP = 1.5 (COP)R = (COP)HP = 2.5 (COP)R = (COP)HP = 0.6 (COP)R = 1.5; (COP)HP = 2.5 (COP)R = 2.5; (COP)HP = 1.5 (COP)R = (COP)HP = 2.5 (COP)R = (COP)HP = 0.6 (COP)R = 1.5; (COP)HP = 2.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is Nu = Gz Nu = 0.023 Re0.8 . Pr0.4 Nu = 2Gz0.5 Nu = Gz Nu = Gz Nu = 0.023 Re0.8 . Pr0.4 Nu = 2Gz0.5 Nu = Gz ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multiple effect evaporation is generally recommended, when the Fuel is cheaply available Large scale evaporation of liquor is needed Evaporation on small scale is to be done Corrosive liquids are to be concentrated Fuel is cheaply available Large scale evaporation of liquor is needed Evaporation on small scale is to be done Corrosive liquids are to be concentrated ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a cold dilute feed to produce thick viscous liquor, backward feeding as compared to forward feeding results in No effect on economy Decreased economy Increased economy Lower capacity No effect on economy Decreased economy Increased economy Lower capacity ANSWER DOWNLOAD EXAMIANS APP
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