Heat Transfer Which of the following forced convection heat transfer equation accounts for the liquid viscosity effect for viscous liquids? Dittus-Boeltier equation Sieder-Tate equation None of these Nusselt equation Dittus-Boeltier equation Sieder-Tate equation None of these Nusselt equation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is 120.36 2.36 4.36 Dependent on NRe only 120.36 2.36 4.36 Dependent on NRe only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient continues to decrease goes through a maximum. continues to increase goes through a minimum continues to decrease goes through a maximum. continues to increase goes through a minimum ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At constant temperature, the thermal conductivities of gases __________ with rise in pressure. May increase or decrease; depends on the pressure Decrease Increase Remain unchanged May increase or decrease; depends on the pressure Decrease Increase Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Coal dust Iron plates Refractory bricks Aluminium foil Coal dust Iron plates Refractory bricks Aluminium foil ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a parallel flow heat exchanger, if the outlet temperature of hot and cold fluids are the same, then the log mean temperature difference (LMTD) is Minimum Infinity Maximum Zero Minimum Infinity Maximum Zero ANSWER DOWNLOAD EXAMIANS APP
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