Heat Transfer In a heat exchanger, floating head is provided to increase log mean temperature gradient increase the heat transfer area relieve stresses caused by thermal expansion facilitate cleaning of the exchanger increase log mean temperature gradient increase the heat transfer area relieve stresses caused by thermal expansion facilitate cleaning of the exchanger ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An insulator should have High thermal conductivity A porous structure Low thermal conductivity Less resistance to heat flow High thermal conductivity A porous structure Low thermal conductivity Less resistance to heat flow ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, the hydrodynamic and thermal boundary layers of a fluid flowing over a heated plate will be identical? > 1 1 None of these < 1 > 1 1 None of these < 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water. Density Viscosity Boiling point (at the same pressure) Thermal conductivity Density Viscosity Boiling point (at the same pressure) Thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a given ambient air temperature with increase in the thickness of insulation of a hot cylinderical pipe, the rate of heat loss from the surface would Decrease First increase and then decrease Increase First decrease and then increase Decrease First increase and then decrease Increase First decrease and then increase ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat flux in the nucleate boiling regimes is proportional to (where, ΔT = excess temperature) (ΔT)³ √(ΔT) (ΔT)⁴ (ΔT)² (ΔT)³ √(ΔT) (ΔT)⁴ (ΔT)² ANSWER DOWNLOAD EXAMIANS APP
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