Heat Transfer Which of the following is generally considered as opaque surface towards radiations? Gases Solids Liquids Both solids & liquids Gases Solids Liquids Both solids & liquids ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe? < 0.1 < 0.5 > 0.6 0.5 < 0.1 < 0.5 > 0.6 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The non-dimensional temperature gradient in a liquid at the wall of a pipe is the Schmidt number Prandtl number Nusselt number Heat flux Schmidt number Prandtl number Nusselt number Heat flux ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Viscous & heat sensitive liquids are concentrated in __________ evaporators. Long tube Open pan Agitated film None of these Long tube Open pan Agitated film None of these ANSWER DOWNLOAD EXAMIANS APP
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 Giving the surface a mirror finish Roughening the surface Painting the surface black Painting the surface white (with aluminium paint) Giving the surface a mirror finish Roughening the surface Painting the surface black Painting the surface white (with aluminium paint) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For small temperature difference, the heat transfer rate as per Newton's law of cooling is proportional to (where, Δt = excess temperature) √Δt Δt Δt³ Δt² √Δt Δt Δt³ Δt² ANSWER DOWNLOAD EXAMIANS APP
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