Heat Transfer Nucleate boiling is promoted On rough surfaces On polished surfaces None of these In the absence of agitation On rough surfaces On polished surfaces None of these In the absence of agitation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At constant temperature, the thermal conductivities of gases __________ with rise in pressure. Remain unchanged Decrease Increase May increase or decrease; depends on the pressure Remain unchanged Decrease Increase May increase or decrease; depends on the pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Film boiling is usually not desired in commercial equipments, because none of the listed here it is difficult to maintain the heat transfer rate is low in view of the large temperature drop. @ it is not economic none of the listed here it is difficult to maintain the heat transfer rate is low in view of the large temperature drop. @ it is not economic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator. Remains constant May increase or decrease, depends on the vacuum Increases Decreases Remains constant May increase or decrease, depends on the vacuum Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is exposed to a fluid stream with a convective heat transfer coefficient of 100 W/m².K. The Biot number is 3.5 0.0035 0.025 5.6 3.5 0.0035 0.025 5.6 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Rate of heat transfer by vaporisation from pools of water is affected by the Nature of heating surface and distribution of bubbles All of these Viscosity of water Surface tension of water Nature of heating surface and distribution of bubbles All of these Viscosity of water Surface tension of water ANSWER DOWNLOAD EXAMIANS APP
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