Heat and Mass Transfer Planck’s law holds good for polished bodies black bodies All of these all coloured bodies polished bodies black bodies All of these all coloured bodies ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of the energy absorbed by the body to total energy falling on it is called Emissive power Emissivity Absorptive power Absorptivity Emissive power Emissivity Absorptive power Absorptivity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Free convection flow depends on Density Coefficient of viscosity Gravitational force All of these Density Coefficient of viscosity Gravitational force All of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In free convection heat transfer transition from laminar to turbulent flow is governed by the critical value of the Reynold's number Grashoff's number Reynold's number, Grashoff's number Prandtl number, Grashoff's number Reynold's number Grashoff's number Reynold's number, Grashoff's number Prandtl number, Grashoff's number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Heat conducted through per unit area and unit thick face per unit time when temperature difference between opposite faces is unity, is called Temperature gradient Thermal resistance Thermal conductivity Thermal coefficient Temperature gradient Thermal resistance Thermal conductivity Thermal coefficient 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/Cmin Cmin/U U/A.Cmin U.Cmin U/Cmin Cmin/U U/A.Cmin U.Cmin ANSWER DOWNLOAD EXAMIANS APP
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