Heat Transfer Open pan evaporators are preferred to be used, when the solution to be concentrated is Scaling Salty Highly viscous Corrosive Scaling Salty Highly viscous Corrosive ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Maximum heat transfer rate is obtained in __________ flow. Laminar Transition region Turbulent Creeping Laminar Transition region Turbulent Creeping 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. 10 minutes 40 minutes 20 minutes 5 minutes 10 minutes 40 minutes 20 minutes 5 minutes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Fourier's law, the proportionality constant is called the Thermal diffusivity Heat transfer co-efficient Thermal conductivity Stefan-Boltzman constant Thermal diffusivity Heat transfer co-efficient Thermal conductivity Stefan-Boltzman constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat exchangers operating, when the asymptotic range is reached, None of these Results in making part of the heating surface inactive Results in abruptly increased velocity Provide very large heat transfer co-efficient None of these Results in making part of the heating surface inactive Results in abruptly increased velocity Provide very large heat transfer co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally Decreases Increases exponentially Remains unchanged Increases Decreases Increases exponentially Remains unchanged Increases ANSWER DOWNLOAD EXAMIANS APP
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