Heat Transfer In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator. May increase or decrease, depends on the vacuum Decreases Increases Remains constant May increase or decrease, depends on the vacuum Decreases Increases Remains constant 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 2000 5000 6000 4000 2000 5000 6000 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number is the ratio of the temperature gradient at the wall to That across the entire pipe Heat flux Temperature difference None of these That across the entire pipe Heat flux Temperature difference None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Mechanical recompression evaporation is used in the production of Fruits jam Distilled water Alcohol Salt Fruits jam Distilled water Alcohol Salt ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall heat transfer co-efficient for cooling of hydrocarbons by water is about 50 -100 Kcal/hr.m².°C 50 -100 BTU/hr. ft.2°F 50 -100 W/m² . °K 1000 - 1500 BTU/hr. ft.2°F 50 -100 Kcal/hr.m².°C 50 -100 BTU/hr. ft.2°F 50 -100 W/m² . °K 1000 - 1500 BTU/hr. ft.2°F ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Aluminium foil Refractory bricks Coal dust Iron plates Aluminium foil Refractory bricks Coal dust Iron plates ANSWER DOWNLOAD EXAMIANS APP
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