Heat Transfer Heat transfer occurs by natural convection because change in temperature causes difference in Density Heat capacity Viscosity Thermal conductivity Density Heat capacity Viscosity Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is 6000 24000 60000 48000 6000 24000 60000 48000 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. 20 minutes 10 minutes 5 minutes 40 minutes 20 minutes 10 minutes 5 minutes 40 minutes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids? None of these At low velocity At high fluid velocity When fluid flows past a smooth surface None of these At low velocity At high fluid velocity When fluid flows past a smooth surface ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An ejector is used to None of these Increase pressure Remove condensate Increase temperature None of these Increase pressure Remove condensate Increase temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling of milk in an open vessel is an example of __________ boiling. Film Saturated nucleate Sub-cooled None of these Film Saturated nucleate Sub-cooled None of these ANSWER DOWNLOAD EXAMIANS APP
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