Heat Transfer The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m². The flux, when the element temperature is increased to 1000°C for the same furnace temperature is 12.0 kW/m² 14.6 kW/m² 11.2 kW/m² 16.5 kW/m² 12.0 kW/m² 14.6 kW/m² 11.2 kW/m² 16.5 kW/m² ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the thermal conductivity of most liquids Remains same Increases Decreases First increases upto a certain temperature and then becomes constant Remains same Increases Decreases First increases upto a certain temperature and then becomes constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam economy in case of a triple effect evaporator will be 1 Between 0 and 1 > 1 < 1 1 Between 0 and 1 > 1 < 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the Lower pressure drop through the exchanger is desired Temperature of the incoming vapor is very high Higher condensing film co-efficient is desired Condensate is corrosive in nature Lower pressure drop through the exchanger is desired Temperature of the incoming vapor is very high Higher condensing film co-efficient is desired Condensate is corrosive in nature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a body is equal to its emissivity under thermal equilibrium at a particular temperature for circular bodies none of the listed here under thermal equilibrium at a particular temperature for circular bodies none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The value of Stefan-Boltazman constant in SI unit is 0.1714 x 10-8kcal/m². °K4 5.6697 x 10-8kcal/m² . °K4 5.6697 x 10-8W/m².°K4 0.1714 x 10-8W/m².°K4 0.1714 x 10-8kcal/m². °K4 5.6697 x 10-8kcal/m² . °K4 5.6697 x 10-8W/m².°K4 0.1714 x 10-8W/m².°K4 ANSWER DOWNLOAD EXAMIANS APP
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