Heat Transfer A 2-4 heat exchanger involves Both counter and parallel-flow of the fluids Smaller pressure drop compared to 1-2 exchanger Only counter-flow of fluids Only parallel-flow of fluids Both counter and parallel-flow of the fluids Smaller pressure drop compared to 1-2 exchanger Only counter-flow of fluids Only parallel-flow of fluids ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Duhring rule is important in solving problems on Evaporation Distillation Crystallisation Humidification Evaporation Distillation Crystallisation Humidification 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 tempeature follows __________ law. Linear Logarithmic Parabolic Hyperbolic Linear Logarithmic Parabolic Hyperbolic 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 0.15 555 0.55 55.5 0.15 555 0.55 55.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area Passes through a maxima Decreases Remains constant Increases Passes through a maxima Decreases Remains constant Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body) Independent of T α T⁴ α 1/T αT Independent of T α T⁴ α 1/T αT ANSWER DOWNLOAD EXAMIANS APP
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