Heat Transfer In a heat exchanger, floating head is provided to increase log mean temperature gradient increase the heat transfer area relieve stresses caused by thermal expansion facilitate cleaning of the exchanger increase log mean temperature gradient increase the heat transfer area relieve stresses caused by thermal expansion facilitate cleaning of the exchanger ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it None of these Increases the overall heat transfer coefficient Decreases the pressure drop Decreases the outlet temperature of cooling medium None of these Increases the overall heat transfer coefficient Decreases the pressure drop Decreases the outlet temperature of cooling medium ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat exchanger tubes are never made of Lead Plain carbon steel Stainless steel Copper Lead Plain carbon steel Stainless steel Copper 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 The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is Dependent on NRe only 120.36 2.36 4.36 Dependent on NRe only 120.36 2.36 4.36 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is correct ? Resistance = Driving force x Rate Rate = Driving force x Resistance Driving force = Rate x Resistance Rate = Resistance/Driving force Resistance = Driving force x Rate Rate = Driving force x Resistance Driving force = Rate x Resistance Rate = Resistance/Driving force ANSWER DOWNLOAD EXAMIANS APP
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