Heat Transfer If heat transfer rate varies with the time, it is termed as None of these Steady state conduction Monochromatic radiation Forced convection None of these Steady state conduction Monochromatic radiation Forced convection ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer co-efficient (h1) for liquids increases with Increasing temperature Decreasing Reynolds number None of these Decreasing temperature Increasing temperature Decreasing Reynolds number None of these Decreasing temperature 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 Remains constant Increases Passes through a maxima Decreases Remains constant Increases Passes through a maxima ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is Counter flow with process stream on tube side Parallel flow with process stream on tube side Parallel flow with process stream on shell side Counter flow with process stream on shell side Counter flow with process stream on tube side Parallel flow with process stream on tube side Parallel flow with process stream on shell side Counter flow with process stream on shell side ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat exchangers operating, when the asymptotic range is reached, None of these Provide very large heat transfer co-efficient Results in making part of the heating surface inactive Results in abruptly increased velocity None of these Provide very large heat transfer co-efficient Results in making part of the heating surface inactive Results in abruptly increased velocity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is generally considered as opaque surface towards radiations? Liquids Gases Solids Both solids & liquids Liquids Gases Solids Both solids & liquids ANSWER DOWNLOAD EXAMIANS APP
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