Heat Transfer Choose the correct equation. Nu = (Re) (Pr) (St) Nu = (Pr)(St) Nu = (Re)(Pr) Nu = (Re) (Pr) (Gz) Nu = (Re) (Pr) (St) Nu = (Pr)(St) Nu = (Re)(Pr) Nu = (Re) (Pr) (Gz) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is Thin walled having the value of Ao Ai/< 2 Thick walled Both B and C Having the value of Ao/Ai > 2 Thin walled having the value of Ao Ai/< 2 Thick walled Both B and C Having the value of Ao/Ai > 2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will Remain unchanged Decrease Either increase or decrease; depends on the coolant flow rate Increase Remain unchanged Decrease Either increase or decrease; depends on the coolant flow rate Increase ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The non-dimensional temperature gradient in a liquid at the wall of a pipe is the Prandtl number Nusselt number Schmidt number Heat flux Prandtl number Nusselt number Schmidt number Heat flux ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is the most widely used heat insulating material for pipelines carrying steam? Tar dolomite bricks followed by asbestos Fireclay refractory followed by aluminium sheet Cotton followed by aluminium foil 85% magnesia cement and glass wool Tar dolomite bricks followed by asbestos Fireclay refractory followed by aluminium sheet Cotton followed by aluminium foil 85% magnesia cement and glass wool ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a laboratory test run, the rate of drying was found to be 0.5 x 10-3 kg/m².s, when the moisture content reduced from 0.4 to 0.1 on dry basis. The critical moisture content of the material is 0.08 on a dry basis. A tray dryer is used to dry 100 kg (dry basis) of the same material under identical conditions. The surface area of the material is 0.04 m²/kg of dry solid. The time required (in seconds) to reduce the moisture content of the solids from 0.3 to 0.2 (dry basis) is 4000 5000 2000 6000 4000 5000 2000 6000 ANSWER DOWNLOAD EXAMIANS APP
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