Heat Transfer The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by Roughening the surface Painting the surface white (with aluminium paint) Painting the surface black Giving the surface a mirror finish Roughening the surface Painting the surface white (with aluminium paint) Painting the surface black Giving the surface a mirror finish ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Log mean temperature difference (LMTD) cannot be used, if the heat capacity is not constant and there is a phase change. heat transfer co-efficient over the entire heat exchanger is not constant there exists an unsteady state none of the listed here the heat capacity is not constant and there is a phase change. heat transfer co-efficient over the entire heat exchanger is not constant there exists an unsteady state none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following parameters is increased by use of finned tube in a multipass shell and tube heat exchanger? All of these Effective tube surface area for convective heat transfer Convective heat transfer co-efficient Tube side pressure drop and the heat transfer rate All of these Effective tube surface area for convective heat transfer Convective heat transfer co-efficient Tube side pressure drop and the heat transfer rate ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a boiling curve, the peak heat flux is called the __________ point. Burnout Leidenfrost Boiling Nusselt Burnout Leidenfrost Boiling Nusselt ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following forced convection heat transfer equation accounts for the liquid viscosity effect for viscous liquids? Sieder-Tate equation Dittus-Boeltier equation Nusselt equation None of these Sieder-Tate equation Dittus-Boeltier equation Nusselt equation None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multiple effect evaporators are commonly used in the manufacture of P. Paper Q. Superphosphate R. Sugar S. Fats P and Q P and R P and S R and S P and Q P and R P and S R and S ANSWER DOWNLOAD EXAMIANS APP
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