Heat Transfer Prandtl and Reynolds analogy are same, when Prandtl number is > 2 0.5 1 1.5 > 2 0.5 1 1.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multipass heat exchangers are used To obtain higher heat transfer co-efficient and shorter tube For low heat load Because of simplicity of fabrication To reduce the pressure drop To obtain higher heat transfer co-efficient and shorter tube For low heat load Because of simplicity of fabrication To reduce the pressure drop ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In forced convection, the Nusselt number is a function of Re and Pr Re and Sc Re and Gr Pr and Gr Re and Pr Re and Sc Re and Gr Pr and Gr ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as Q ∝ T⁴ Q ∝ T³ None of these Q ∝ T² Q ∝ T⁴ Q ∝ T³ None of these Q ∝ T² ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In the equation Q = UAΔt; Δt is Geometric mean temperature difference Logarithmic mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference Geometric mean temperature difference Logarithmic mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid Decreases Increases or decreases depending on number of shell passes Increases Remains unchanged Decreases Increases or decreases depending on number of shell passes Increases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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