Heat and Mass Transfer The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is Less than one Equal to Nusselt number Greater than one Equal to one Less than one Equal to Nusselt number Greater than one Equal to one ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following would lead to a reduction in thermal resistance? In convection, stirring of the fluid and cleaning the heating surface. In conduction, reduction in the thickness of the material and an increase in thermal conductivity. In radiation, increasing the temperature and reducing the emissivity. All of these In convection, stirring of the fluid and cleaning the heating surface. In conduction, reduction in the thickness of the material and an increase in thermal conductivity. In radiation, increasing the temperature and reducing the emissivity. All of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Free convection flow depends on All of these Gravitational force Density Coefficient of viscosity All of these Gravitational force Density Coefficient of viscosity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In a shell and tube heat exchanger, baffles are provided on the shell side to Provide support for tubes Prevent stagnation of shell side fluid All of these Improve heat transfer Provide support for tubes Prevent stagnation of shell side fluid All of these Improve heat transfer ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The transfer of heat by molecular collision is known as None of these Convection Conduction Radiation None of these Convection Conduction Radiation ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Total heat is the heat required to Increase the temperature of a liquid or vapour Convert water into steam and superheat it Change liquid into vapour Change vapour into liquid Increase the temperature of a liquid or vapour Convert water into steam and superheat it Change liquid into vapour Change vapour into liquid ANSWER DOWNLOAD EXAMIANS APP
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