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 Dependent on NRe only 4.36 120.36 2.36 Dependent on NRe only 4.36 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Harmonic mean temperature difference is given by √(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) √(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The actual temperature drop across the heating surface of an evaporator depends on the Solution being evaporated All of these Liquid depth over the heating surface Pressure difference between the steam chest and the vapor space above the boiling liquid Solution being evaporated All of these Liquid depth over the heating surface Pressure difference between the steam chest and the vapor space above the boiling liquid ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the total emissivity of conductors Remains same Increases Decreases linearly Decreases Remains same Increases Decreases linearly Decreases 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 Water is normally used as a coolant in the heat exchange equipments mainly because ofits Abundance & high heat capacity Low viscosity Low density High fluidity Abundance & high heat capacity Low viscosity Low density High fluidity ANSWER DOWNLOAD EXAMIANS APP
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