Heat and Mass Transfer Thermal diffusivity is A dimensionless parameter Used as mathematical model A physical property of the material Function of temperature A dimensionless parameter Used as mathematical model A physical property of the material Function of temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The value of the wavelength for maximum emissive power is given by Planck's law Stefan's law Fourier's law Wien’s law Planck's law Stefan's law Fourier's law Wien’s law ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The highest thermal diffusivity is of Iron Concrete Wood Lead Iron Concrete Wood Lead ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The total radiation from a black body per second per unit area is ________ fourth power of the absolute temperature. This statement is known as Stefan Boltzmann law. Directly proportional to Inversely proportional to Equal to None of these Directly proportional to Inversely proportional to Equal to None of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The heat transfer takes place according to First law of thermodynamics Zeroth law of thermodynamics Second law of thermodynamics Kirchhoff's law First law of thermodynamics Zeroth law of thermodynamics Second law of thermodynamics Kirchhoff's law ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The transfer of heat by molecular collision is known as Convection Conduction None of these Radiation Convection Conduction None of these Radiation ANSWER DOWNLOAD EXAMIANS APP
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