Heat Transfer Grashhoff number is given by gD³βΔtP²/μ gD³.β.Δtρ²/μ² gD2βΔtρ/μ² gD2βΔtP²μ gD³βΔtP²/μ gD³.β.Δtρ²/μ² gD2βΔtρ/μ² gD2βΔtP²μ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, the hydrodynamic and thermal boundary layers of a fluid flowing over a heated plate will be identical? None of these > 1 1 < 1 None of these > 1 1 < 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Absorptivity and refletivity of a perfect black body are respectively 1 and ? 0 and 0.5 0 and 1 1 and 0 1 and ? 0 and 0.5 0 and 1 1 and 0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal diffusivity of a material Has the unit m² /sec Is the ratio of thermal conductivity to thermal capacity All of these Is defined as K/ρ . Cp Has the unit m² /sec Is the ratio of thermal conductivity to thermal capacity All of these Is defined as K/ρ . Cp ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which area is used in case of heat flow by conduction through a cylinder ? None of the listed here Logarithmic mean area Arithmetic mean area Geometric mean area None of the listed here Logarithmic mean area Arithmetic mean area Geometric mean area ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, floating head is used for Large temperature differentials Low pressure drop High heat transfer co-efficient Less corrosion of tubes Large temperature differentials Low pressure drop High heat transfer co-efficient Less corrosion of tubes ANSWER DOWNLOAD EXAMIANS APP
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