Heat Transfer A 2-4 heat exchanger involves Only counter-flow of fluids Smaller pressure drop compared to 1-2 exchanger Both counter and parallel-flow of the fluids Only parallel-flow of fluids Only counter-flow of fluids Smaller pressure drop compared to 1-2 exchanger Both counter and parallel-flow of the fluids Only parallel-flow of fluids 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 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 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area Decreases Passes through a maxima Increases Remains constant Decreases Passes through a maxima Increases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A hollow sphere and a solid sphere of the same material and equal radii are heated to the same temperature. In this case, Both B & C Both the spheres will emit equal amount of radiation per unit time in the beginning Both will absorb equal amount of radiation from the surrounding in the beginning The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant Both B & C Both the spheres will emit equal amount of radiation per unit time in the beginning Both will absorb equal amount of radiation from the surrounding in the beginning The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dropwise condensation is promoted on a/an __________ surface. Glazed Smooth Coated Oily Glazed Smooth Coated Oily ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius 'r' of insulation on a pipe is given by r = h/k r = k/h r = k/2h r = 2k/h r = h/k r = k/h r = k/2h r = 2k/h ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS