Heat and Mass Transfer Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of 0.002 0.02 0.1 0.01 0.002 0.02 0.1 0.01 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Heat transfer takes place as per Kirchoff's law Zeroth law of thermodynamics First law of thermodynamic Second law of the thermodynamics Kirchoff's law Zeroth law of thermodynamics First law of thermodynamic Second law of the thermodynamics ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The thermal diffusivities for gases are generally Dependent on the viscosity Less than those for liquids More than those for solids More than those for liquids Dependent on the viscosity Less than those for liquids More than those for solids More than those for liquids ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The heat of sun reaches to us according to Convection Radiation Conduction None of these Convection Radiation Conduction None of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Free convection flow depends on Density Gravitational force Coefficient of viscosity All of these Density Gravitational force Coefficient of viscosity All of these 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) k. (dx/dT) k. (dT/dx) k. A. (dT/dx) k. A. (dx/dT) k. (dx/dT) k. (dT/dx) k. A. (dT/dx) k. A. (dx/dT) ANSWER DOWNLOAD EXAMIANS APP
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