Heat Transfer For condensation of pure vapors, if the heat transfer co-efficients in filmwise and drop-wise condensation are respectively hf and hd, then hf = hd hf > hd hf could be greater or smaller than hd hf < hd hf = hd hf > hd hf could be greater or smaller than hd hf < hd ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A steel sphere of radius 0.1 m at 400°K is immersed in an oil at 300°K. If the centre of the sphere reaches 350°K in 20 minutes, how long will it take for a 0.05 m radius steel sphere to reach the same temperature (at the centre) under identical conditions ? Assume that the conductive heat transfer co-efficient is infinitely large. 20 minutes 10 minutes 40 minutes 5 minutes 20 minutes 10 minutes 40 minutes 5 minutes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which area is used in case of heat flow by conduction through a cylinder ? Geometric mean area Logarithmic mean area None of the listed here Arithmetic mean area Geometric mean area Logarithmic mean area None of the listed here Arithmetic mean area ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In SI units, fouling factor is expressed in W/m²°K m²°K/W m°K/W m²°K W/m²°K m²°K/W m°K/W m²°K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The equation, (NSt x N2/3Pr) = f/2, is the __________ analogy. Colburn Prandtl Reynolds None of these Colburn Prandtl Reynolds None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The steam ejector is used to Create vacuum None of these Remove condensate from the steam pipelines Superheat the steam Create vacuum None of these Remove condensate from the steam pipelines Superheat the steam ANSWER DOWNLOAD EXAMIANS APP
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