Heat Transfer Overall heat transfer co-efficient for cooling of hydrocarbons by water is about 1000 - 1500 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 Kcal/hr.m².°C 50 -100 BTU/hr. ft.2°F 1000 - 1500 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 Kcal/hr.m².°C 50 -100 BTU/hr. ft.2°F ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The overall resistance for heat transfer through a series of flat resistance, is the __________ of the resistances. Product Average Sum Geometric mean Product Average Sum Geometric mean ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large. 5 minutes 20 minutes 40 minutes 10 minutes 5 minutes 20 minutes 40 minutes 10 minutes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat flux through several resistances in series in analogous to the current flowing through several. resistances in series resistances in parallel capacitors in series none of the listed here resistances in series resistances in parallel capacitors in series none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter (D) as (D)1.8 (D)-1.8 (D)0.2 (D)-0.2 (D)1.8 (D)-1.8 (D)0.2 (D)-0.2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a multipass shell and tube heat exchanger, the LMTD correction factor is always > 1 1 Between 1 & 2 < 1 > 1 1 Between 1 & 2 < 1 ANSWER DOWNLOAD EXAMIANS APP
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