Heat and Mass Transfer Unit of thermal conductivity in S.I. units is W/m °K Option (B) and (C) above J/m °K sec J/m² sec W/m °K Option (B) and (C) above J/m °K sec J/m² sec ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Temperature of steam at around 540°C can be measured by None of these Thermocouple Thermistor Thermometer None of these Thermocouple Thermistor Thermometer ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A designer chooses the values of fluid flow rates and specific heats in such a manner that the heat capacities of the two fluids are equal. A hot fluid enters the counter flow heat exchanger at 100°C and leaves at 60°C. A cold fluid enters the heat exchanger at 40°C. The mean temperature difference between the two fluids is 60°C 20°C 66.7°C 40°C 60°C 20°C 66.7°C 40°C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as U/A.Cmin U.Cmin Cmin/U U/Cmin U/A.Cmin U.Cmin Cmin/U U/Cmin ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal diffusivity is A dimensionless parameter Function of temperature A physical property of the material Used as mathematical model A dimensionless parameter Function of temperature A physical property of the material Used as mathematical model ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Stefan Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the Absolute temperature Square of the absolute temperature Fourth power of the absolute temperature Cube of the absolute temperature Absolute temperature Square of the absolute temperature Fourth power of the absolute temperature Cube of the absolute temperature ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS