Heat Transfer The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) ∝ 1/t ∝ t Independent of 't' ∝ √t ∝ 1/t ∝ t Independent of 't' ∝ √t ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Biot number, the characteristic length used is the ratio of the __________ of the solid. Perimeter to surface area Volume to surface area Surface area to volume Surface area to perimeter Perimeter to surface area Volume to surface area Surface area to volume Surface area to perimeter ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fouling factor for a heat exchanger is given by (where, U₁ = heat transfer co-efficient of dirty surface U₂ = heat transfer co-efficient of clean surface) 1/U₂ - 1/U₁ U₁ - U₂ 1/U₁ - 1/U₂ U₂ - U₁ 1/U₂ - 1/U₁ U₁ - U₂ 1/U₁ - 1/U₂ U₂ - U₁ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Finned tube heat exchangers facilitate very large temperature drop through tube wall use metal fins of low thermal conductivity give larger area per tube are used for smaller heat load facilitate very large temperature drop through tube wall use metal fins of low thermal conductivity give larger area per tube are used for smaller heat load ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a parallel flow heat exchanger, if the outlet temperature of hot and cold fluids are the same, then the log mean temperature difference (LMTD) is Infinity Maximum Zero Minimum Infinity Maximum Zero Minimum ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a single effect evaporator, the economy is 1 < 1 None of these > 1 1 < 1 None of these > 1 ANSWER DOWNLOAD EXAMIANS APP
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