Heat Transfer Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface? Hot surface temperature Interfacial tension Liquid viscosity Liquid density Hot surface temperature Interfacial tension Liquid viscosity Liquid density ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The purpose of floating head in a heat exchanger is to Decrease the pressure drop Facilitate its lengthening, if needed Avoid buckling of tubes Provide support for tubes Decrease the pressure drop Facilitate its lengthening, if needed Avoid buckling of tubes Provide support for tubes ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The average heat transfer co-efficient for laminar film condensation on vertical surface is inversely proportional to (where, ΔT = Temperature drop across condensate film ) (ΔT)2 ΔT None of the listed here (ΔT)1/4 (ΔT)2 ΔT None of the listed here (ΔT)1/4 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In an extended surface heat exchanger, fluid having lower co-efficient Should not be used as it gives very high pressure drop Flows outside the tubes Can flow either inside or outside the tubes Flows through the tube Should not be used as it gives very high pressure drop Flows outside the tubes Can flow either inside or outside the tubes Flows through the tube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a counter current heat exchanger with Tih = 80°C, T°c = 60°C, T°h = 50°C and Tic = 30°C, and the temperature difference between the two streams being the same everywhere along Z, the direction of flow of hot fluid. The temperature profile should satisfy d²T/dZ² = 0 dT/dZ = 0 d²T/dZ² > 0 d²T/dZ² < 0 d²T/dZ² = 0 dT/dZ = 0 d²T/dZ² > 0 d²T/dZ² < 0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In the free convection regime of pool boiling, the heat flux is proportional to Δt5/4 Δt2 Δt1/2 Δt Δt5/4 Δt2 Δt1/2 Δt ANSWER DOWNLOAD EXAMIANS APP
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