Heat Transfer Dietus-Boelter equation used for the determination of heat transfer co-efficient is valid none of the listed here when Grashhoff number is very important for fluids in laminar flow for fluids in tubulent flow none of the listed here when Grashhoff number is very important for fluids in laminar flow for fluids in tubulent flow 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 Δt² Δt³ Δt √Δt Δt² Δt³ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer 'Duhring's plot' is of use in Evaporation Extractive distillation Leaching Absorption Evaporation Extractive distillation Leaching Absorption ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is Having the value of Ao/Ai > 2 Thin walled having the value of Ao Ai/< 2 Both B and C Thick walled Having the value of Ao/Ai > 2 Thin walled having the value of Ao Ai/< 2 Both B and C Thick walled 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 Painting the surface black Roughening the surface Painting the surface white (with aluminium paint) Giving the surface a mirror finish Painting the surface black Roughening the surface Painting the surface white (with aluminium paint) Giving the surface a mirror finish ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The unit of heat transfer co-efficient in SI unit is W/m°K W/m2°K J/m°K J/M2°K W/m°K W/m2°K J/m°K J/M2°K ANSWER DOWNLOAD EXAMIANS APP
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