Heat Transfer A diathermaneous substance __________ the thermal radiation completely. Absorbs None of these Transmits Reflects Absorbs None of these Transmits Reflects ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The temperature at a distance 100 mm from the dipped end becomes 40°C at time, t = 200 s. The same temperature is achieved at a distance of 200 mm from the dipped end at time t = 400 s t = 356 s t = 283 s t = 800 s t = 400 s t = 356 s t = 283 s t = 800 s 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 Nusselt number is a function of Prandtl number and __________ number of fluid in natural convection heat transfer. Grashoff Stantan Biot Reynolds Grashoff Stantan Biot Reynolds ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, floating head is used for High heat transfer co-efficient Low pressure drop Less corrosion of tubes Large temperature differentials High heat transfer co-efficient Low pressure drop Less corrosion of tubes Large temperature differentials ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger, floating head is provided to facilitate cleaning of the exchanger increase the heat transfer area relieve stresses caused by thermal expansion increase log mean temperature gradient facilitate cleaning of the exchanger increase the heat transfer area relieve stresses caused by thermal expansion increase log mean temperature gradient ANSWER DOWNLOAD EXAMIANS APP
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