Heat Transfer Heat exchangers operating, when the asymptotic range is reached, Results in abruptly increased velocity Provide very large heat transfer co-efficient Results in making part of the heating surface inactive None of these Results in abruptly increased velocity Provide very large heat transfer co-efficient Results in making part of the heating surface inactive None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Refractory bricks Iron plates Coal dust Aluminium foil Refractory bricks Iron plates Coal dust Aluminium foil ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, The temperature drop is inversely proportional to the resistance across which the drop occurs The temperature drops in the two fluids and the wall are proportional to individual resistances The relationship is not generalised There is no relationship between temperature drop and resistance The temperature drop is inversely proportional to the resistance across which the drop occurs The temperature drops in the two fluids and the wall are proportional to individual resistances The relationship is not generalised There is no relationship between temperature drop and resistance ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The equation, Nst = f/2, is the __________ analogy. None of these Reynolds Colburn Prandtl None of these Reynolds Colburn Prandtl ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Calburn analogy is applicable for the value of Prandtl number from 0.5 to 5 0.6 to 120 0.001 to 1 120 to 400 0.5 to 5 0.6 to 120 0.001 to 1 120 to 400 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Low thermal conductivity of heat insulating materials is due to its High specific heat Dense structure High proportion of air space None of these High specific heat Dense structure High proportion of air space None of these ANSWER DOWNLOAD EXAMIANS APP
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