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 14.6 kW/m² 16.5 kW/m² 11.2 kW/m² 12.0 kW/m² 14.6 kW/m² 16.5 kW/m² 11.2 kW/m² 12.0 kW/m² ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As per Kirchoffs law, the ratio of the total radiating power to the absorptivity of a body depends on the temperature of the body only wavelength of monochromatic radiation none of the listed here nature of material of body temperature of the body only wavelength of monochromatic radiation none of the listed here nature of material of body ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer co-efficient (h1) for liquids increases with Decreasing temperature Decreasing Reynolds number None of these Increasing temperature Decreasing temperature Decreasing Reynolds number None of these Increasing temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Maximum water velocity in tubes of a 1-2 shell and tube heat exchanger may be around __________ metres/second. 10 1 20 30 10 1 20 30 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Mode of heat transfer in which the fluid moves under the influence of changes in fluid pressure produced by external work is called Radiation Natural convection Conduction Forced convection Radiation Natural convection Conduction Forced convection ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiation heat losses from satisfactorily insulated high pressure boilar may be about __________ percent. 18 1 26 7 18 1 26 7 ANSWER DOWNLOAD EXAMIANS APP
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