Heat Transfer In the equation Q = UAΔt; Δt is The difference of average bulk temperatures of hot and cold fluids Logarithmic mean temperature difference Arithmetic mean temperature difference Geometric mean temperature difference The difference of average bulk temperatures of hot and cold fluids Logarithmic mean temperature difference Arithmetic mean temperature difference Geometric mean temperature difference ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Double pipe heat exchangers are used when heat transfer area required is very low when heat transfer area required is very high because it is less costly because it occupies less floor area when heat transfer area required is very low when heat transfer area required is very high because it is less costly because it occupies less floor area ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone. laminar None of the listed here transition highly turbulent laminar None of the listed here transition highly turbulent 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 Remains unchanged Increases Decreases Increases or decreases depending on number of shell passes Remains unchanged Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A graph between __________ is called Wilson plot. 1/U Vs . 1/v0.8 1/v0.8 Vs . U V0.8 Vs . U 1/U Vs . 1/V 1/U Vs . 1/v0.8 1/v0.8 Vs . U V0.8 Vs . U 1/U Vs . 1/V ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Harmonic mean temperature difference is given by 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) √(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) √(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) ANSWER DOWNLOAD EXAMIANS APP
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