Heat and Mass Transfer When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by Conduction and convection Convection Radiation Conduction Conduction and convection Convection Radiation Conduction ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following property of air does not increase with rise in temperature? Dynamic viscosity Density Thermal diffusivity Thermal conductivity Dynamic viscosity Density Thermal diffusivity Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow, and k = Thermal conductivity of the body) (dx/dT) k. (dT/dx) k. (dx/dT) k. k. (dT/dx) (dx/dT) k. (dT/dx) k. (dx/dT) k. k. (dT/dx) ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In free convection heat transfer, Nusselt number is function of Grashoff number, Prandtl number and Reynold number Prandtl number and Reynold number Grashoff number and Prandtl number Grashoff number and Reynold number Grashoff number, Prandtl number and Reynold number Prandtl number and Reynold number Grashoff number and Prandtl number Grashoff number and Reynold number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Heat transfer takes place as per First law of thermodynamic Zeroth law of thermodynamics Kirchoff's law Second law of the thermodynamics First law of thermodynamic Zeroth law of thermodynamics Kirchoff's law Second law of the thermodynamics 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 Absorptivity Absorptive power Emissivity Emissive power Absorptivity Absorptive power Emissivity Emissive power ANSWER DOWNLOAD EXAMIANS APP
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