Heat Transfer What is the geometric mean of two heat transfer areas A₁ and A₂ ? √(A₁ + A₂) 1/2 √(A₁ . A₂) 2 √(A₁ . A₂) √(A₁ . A₂) √(A₁ + A₂) 1/2 √(A₁ . A₂) 2 √(A₁ . A₂) √(A₁ . A₂) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a forward feed multiple effect evaporator, the pressure is Same in all effects Highest in last effect Lowest in last effect Dependent on the number of effects Same in all effects Highest in last effect Lowest in last effect Dependent on the number of effects ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl number is the ratio of Momentum diffusivity to mass diffusivity Thermal diffusivity to momentum diffusivity Momentum diffusivity to thermal diffusivity Thermal diffusivity to mass diffusivity Momentum diffusivity to mass diffusivity Thermal diffusivity to momentum diffusivity Momentum diffusivity to thermal diffusivity Thermal diffusivity to mass diffusivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The equation, Nst = f/2, is the __________ analogy. Prandtl Colburn None of these Reynolds Prandtl Colburn None of these Reynolds ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the Buoyancy of the bubbles produced at active nucleation site Existence of thermal boundary layer None of these Temperature gradient produced due to density difference Buoyancy of the bubbles produced at active nucleation site Existence of thermal boundary layer None of these Temperature gradient produced due to density difference ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In counter flow compared to parallel flow, Less surface area is required for a given heat transfer rate LMTD is greater Both A and B More surface area is required for a given heat transfer rate Less surface area is required for a given heat transfer rate LMTD is greater Both A and B More surface area is required for a given heat transfer rate ANSWER DOWNLOAD EXAMIANS APP
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