Heat and Mass Transfer Which of the following would lead to a reduction in thermal resistance? All of these In convection, stirring of the fluid and cleaning the heating surface. In radiation, increasing the temperature and reducing the emissivity. In conduction, reduction in the thickness of the material and an increase in thermal conductivity. All of these In convection, stirring of the fluid and cleaning the heating surface. In radiation, increasing the temperature and reducing the emissivity. In conduction, reduction in the thickness of the material and an increase in thermal conductivity. ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following has least value of conductivity? Air Plastic Water Glass Air Plastic Water Glass ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The value of the wavelength for maximum emissive power is given by Wien’s law Fourier's law Stefan's law Planck's law Wien’s law Fourier's law Stefan's law Planck's law ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Dalton's law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour) Pb = pa - pv Pb = pa × pv Pb = pa + pv Pb = pa/pv Pb = pa - pv Pb = pa × pv Pb = pa + pv Pb = pa/pv ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Unit of thermal diffusivity is kcal/m² hr m²/hr m²/hr °C kcal/m. hr °C kcal/m² hr m²/hr m²/hr °C kcal/m. hr °C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Fourier's law of heat conduction gives the heat flow for Two dimensional cases only One dimensional cases only Irregular surfaces Nonuniform temperature surfaces Two dimensional cases only One dimensional cases only Irregular surfaces Nonuniform temperature surfaces ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS