Heat Transfer With increase in porosity, the thermal conductivity of a solid substance Decreases Remains unchanged May increase or decrease; depends on the solid Increases Decreases Remains unchanged May increase or decrease; depends on the solid Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Analogy between mass and heat transfer is not applicable in case of Both B and C Same velocity profile or equal eddy diffusivities Thermal or pressure mass diffusion Viscous heating or chemical reaction Both B and C Same velocity profile or equal eddy diffusivities Thermal or pressure mass diffusion Viscous heating or chemical reaction 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 Existence of thermal boundary layer None of these Buoyancy of the bubbles produced at active nucleation site Temperature gradient produced due to density difference Existence of thermal boundary layer None of these Buoyancy of the bubbles produced at active nucleation site Temperature gradient produced due to density difference ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dropwise condensation occurs on __________ surfaces clean and dirt free smooth clean polished contaminated cooling clean and dirt free smooth clean polished contaminated cooling ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low Dissolved soilds content All of these Hardness Suspended solids content Dissolved soilds content All of these Hardness Suspended solids content ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which area is used in case of heat flow by conduction through a cylinder ? Logarithmic mean area None of the listed here Arithmetic mean area Geometric mean area Logarithmic mean area None of the listed here Arithmetic mean area Geometric mean area ANSWER DOWNLOAD EXAMIANS APP
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