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 1/εx + 1/εy Εx . εy Εx + εy (εx + εy)/(εx + εy - εx . εy) 1/εx + 1/εy Εx . εy Εx + εy (εx + εy)/(εx + εy - εx . εy) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer co-efficient (h1) for liquids increases with Increasing temperature Decreasing temperature Decreasing Reynolds number None of these Increasing temperature Decreasing temperature Decreasing Reynolds number None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Baffle spacing Should be less than one fifth the diameter of the shell Should be less than the inside diameter of the shell Is not the same as baffle pitch None of these Should be less than one fifth the diameter of the shell Should be less than the inside diameter of the shell Is not the same as baffle pitch None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of __________ boiling, the bubbles formed on a submerged hot surface get absorbed in the mass of the liquid. Pool None of these Low pressure Nucleate Pool None of these Low pressure Nucleate ANSWER DOWNLOAD EXAMIANS APP
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 Stefan-Boltzman Kirchoffs Wien's displacement Planck's Stefan-Boltzman Kirchoffs ANSWER DOWNLOAD EXAMIANS APP
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