Heat Transfer The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium. This is __________ law. Wien's displacement Planck's Kirchoffs Stefan-Boltzman Wien's displacement Planck's Kirchoffs Stefan-Boltzman ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Wavelength corresponding to the maximum energy is inversely proportional to the absolute temperature. This is __________ law. Stefan's Kirchoffs Dalton's Wien's Stefan's Kirchoffs Dalton's Wien's ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is Thick walled Both B and C Having the value of Ao/Ai > 2 Thin walled having the value of Ao Ai/< 2 Thick walled Both B and C Having the value of Ao/Ai > 2 Thin walled having the value of Ao Ai/< 2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator. May increase or decrease, depends on the vacuum Increases Decreases Remains constant May increase or decrease, depends on the vacuum Increases Decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The interchange factor for radiation heat transfer from surface 'x' to surface 'y' in case of an infinite parallel planes with emis-sivities εx & εy is given by Εx + εy (εx + εy)/(εx + εy - εx . εy) 1/εx + 1/εy Εx . εy Εx + εy (εx + εy)/(εx + εy - εx . εy) 1/εx + 1/εy Εx . εy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Stefen's block body radiation law can also be derived from __________ law. Kirchoffs None of these Planck's Fourier's Kirchoffs None of these Planck's Fourier's ANSWER DOWNLOAD EXAMIANS APP
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