Heat Transfer Overall heat transfer co-efficient for cooling of hydrocarbons by water is about 50 -100 W/m² . °K 50 -100 BTU/hr. ft.2°F 50 -100 Kcal/hr.m².°C 1000 - 1500 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 BTU/hr. ft.2°F 50 -100 Kcal/hr.m².°C 1000 - 1500 BTU/hr. ft.2°F ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A metal ball of radius 0.1 m at a uniform temperature of 90°C is left in air at 30°C. The density and the specific heat of the metal are 3000 kg/m³ and 0.4 kJ/kg.K respectively. The heat transfer co-efficient is 50 W/m².K Neglecting the temperature gradients inside the ball, the time taken (in hours) for the ball to cool to 60°C is 0.15 55.5 555 0.55 0.15 55.5 555 0.55 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thickness of condensate layer in filmwise condensation depends on the Condensation rate Liquid flow rate from the surface Surface configuration All of these Condensation rate Liquid flow rate from the surface Surface configuration All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat sensitive materials can be concentrated in an evaporator employing High residence time High pressure Vacuum None of these High residence time High pressure Vacuum None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows __________ law. Parabolic Linear Hyperbolic Logarithmic Parabolic Linear Hyperbolic Logarithmic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water. Thermal conductivity Boiling point (at the same pressure) Density Viscosity Thermal conductivity Boiling point (at the same pressure) Density Viscosity ANSWER DOWNLOAD EXAMIANS APP
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