Heat and Mass Transfer Unit of thermal conductivity in M.K.S. units is K cal/kg m² °C K cal m/hr m² °C K cal/hr m² °C K calm/hr °C K cal/kg m² °C K cal m/hr m² °C K cal/hr m² °C K calm/hr °C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Fourier's law of heat conduction is valid for Three dimensional cases only Two dimensional cases only Regular surfaces having non-uniform temperature gradients One dimensional cases only Three dimensional cases only Two dimensional cases only Regular surfaces having non-uniform temperature gradients One dimensional cases only ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Wien's law, the wavelength corresponding to maximum energy is proportion to T Absolute temperature (T) F I² T Absolute temperature (T) F I² ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The amount of heat flow through a body by conduction is Directly proportional to the surface area of the body Dependent upon the material of the body All of these Directly proportional to the temperature difference on the two faces of the body Directly proportional to the surface area of the body Dependent upon the material of the body All of these Directly proportional to the temperature difference on the two faces of the body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The process of heat transfer from one particle of the body to another by the actual motion of the heated particles, is called Radiation Conduction None of these Convection Radiation Conduction None of these Convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Depending on the radiating properties, body will be transparent when (Where a = absorptivity, p = reflectivity, x = transmissivity) X = 0, a + p = 1 P = 0, x= 1, and a = 0 P = 0, x = 0 and a = 1 P=1, x = 0, and a = 0 X = 0, a + p = 1 P = 0, x= 1, and a = 0 P = 0, x = 0 and a = 1 P=1, x = 0, and a = 0 ANSWER DOWNLOAD EXAMIANS APP
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