Heat Transfer A sphere of radius 'R₁' is enclosed in a sphere of radius 'R₂'. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is 1 R₂/(R₁+R₂) (R₁/R₂)2 1 R₂/(R₁+R₂) (R₁/R₂)2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Natural convection is characterised by Prandtl number Peclet number Reynolds number Grashhoff number Prandtl number Peclet number Reynolds number Grashhoff number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in porosity, the thermal conductivity of a solid substance Increases Decreases Remains unchanged May increase or decrease; depends on the solid Increases Decreases Remains unchanged May increase or decrease; depends on the solid ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nucleate boiling is promoted In the absence of agitation On rough surfaces On polished surfaces None of these In the absence of agitation On rough surfaces On polished surfaces None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Agitated film evaporator is suitable for concentrating __________ liquids. Very thin Corrosive Foaming Viscous Very thin Corrosive Foaming Viscous ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number is a function of Prandtl number and __________ number of fluid in natural convection heat transfer. Stantan Reynolds Biot Grashoff Stantan Reynolds Biot Grashoff ANSWER DOWNLOAD EXAMIANS APP
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