Heat and Mass Transfer Heat is transferred by all three modes of transfer, viz. conduction, convection and radiation in Refrigerator condenser coils Steam condenser Electric heater Boiler Refrigerator condenser coils Steam condenser Electric heater Boiler ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In free convection heat transfer, Nusselt number is function of Prandtl number and Reynold number Grashoff number, Prandtl number and Reynold number Grashoff number and Reynold number Grashoff number and Prandtl number Prandtl number and Reynold number Grashoff number, Prandtl number and Reynold number Grashoff number and Reynold number Grashoff number and Prandtl number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity) RN = V²/t.cp RN = μ cp/k RN = ρ V l /μ RN = hl/k RN = V²/t.cp RN = μ cp/k RN = ρ V l /μ RN = hl/k ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Free convection flow depends on Coefficient of viscosity Density All of these Gravitational force Coefficient of viscosity Density All of these Gravitational force ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of water at 20°C is of the order of 0.51 0.23 0.42 0.1 0.51 0.23 0.42 0.1 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following property of air does not increase with rise in temperature? Dynamic viscosity Thermal conductivity Density Thermal diffusivity Dynamic viscosity Thermal conductivity Density Thermal diffusivity ANSWER DOWNLOAD EXAMIANS APP
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