Heat Transfer Critical value of the __________ number governs the transition from laminar to turbulent flow in free convection heat transfer. Reynolds Prandtl & Grashoff Both A & B Grashoff Reynolds Prandtl & Grashoff Both A & B Grashoff ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number is the ratio of the temperature gradient at the wall to Temperature difference That across the entire pipe Heat flux None of these Temperature difference That across the entire pipe Heat flux None of these 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 4.36 2.36 120.36 Dependent on NRe only 4.36 2.36 120.36 Dependent on NRe only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Reynold's analogy states that NRe α f Nst α f Nst α NRe NNu α f NRe α f Nst α f Nst α NRe NNu α f ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For flow over a flat plate, the ratio of thermal boundary layer thickness, 'xt' and hydrodynamic boundary layer thickness 'x' is equal to (where, NPr = Prandtl number) NPr-1 NPr NPr1/3 NPr-1/3 NPr-1 NPr NPr1/3 NPr-1/3 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Forced circulation evaporators are useful for the concentration of viscous, salting and scale forming liquors. Which of the following is a forced circulation evaporator? Horizontal tube evaporator Agitated film evaporator Long vertical evaporator Calenderia vertical tube evaporator Horizontal tube evaporator Agitated film evaporator Long vertical evaporator Calenderia vertical tube evaporator ANSWER DOWNLOAD EXAMIANS APP
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