Heat Transfer The critical radius 'r' of insulation on a pipe is given by r = k/h r = 2k/h r = h/k r = k/2h r = k/h r = 2k/h r = h/k r = k/2h ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Film boiling is usually not desired in commercial equipments, because the heat transfer rate is low in view of the large temperature drop. @ none of the listed here it is difficult to maintain it is not economic the heat transfer rate is low in view of the large temperature drop. @ none of the listed here it is difficult to maintain it is not economic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because Boiling point elevation in a single effect system is much higher than that in any effect in a multieffect system Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system Total heat transfer area of all the effects is -less than that in a single effect evaporator system Boiling point elevation in a single effect system is much higher than that in any effect in a multieffect system Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system Total heat transfer area of all the effects is -less than that in a single effect evaporator system 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 Dependent on NRe only 120.36 2.36 4.36 Dependent on NRe only 120.36 2.36 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in porosity, the thermal conductivity of a solid substance Decreases May increase or decrease; depends on the solid Increases Remains unchanged Decreases May increase or decrease; depends on the solid Increases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following forced convection heat transfer equation accounts for the liquid viscosity effect for viscous liquids? Dittus-Boeltier equation None of these Sieder-Tate equation Nusselt equation Dittus-Boeltier equation None of these Sieder-Tate equation Nusselt equation ANSWER DOWNLOAD EXAMIANS APP
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