Heat Transfer The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns. 100-1000 0.5-50 5-50 0.38-0.78 100-1000 0.5-50 5-50 0.38-0.78 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, floating head is used for High heat transfer co-efficient Low pressure drop Less corrosion of tubes Large temperature differentials High heat transfer co-efficient Low pressure drop Less corrosion of tubes Large temperature differentials ANSWER DOWNLOAD EXAMIANS APP
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 11.2 kW/m² 16.5 kW/m² 12.0 kW/m² 14.6 kW/m² 11.2 kW/m² 16.5 kW/m² 12.0 kW/m² ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which one gives the monochromatic emissive power for black body radiation ? Planck's law Wien's law Stefan-Boltzman law Kirchhoffs law Planck's law Wien's law Stefan-Boltzman law Kirchhoffs law ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a perfectly transparent surface (like gases), the Absorptivity = 0 All of these Transmissivity = 1 Reflectivity = 0 Absorptivity = 0 All of these Transmissivity = 1 Reflectivity = 0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal diffusivity of a material All of these Is the ratio of thermal conductivity to thermal capacity Has the unit m² /sec Is defined as K/ρ . Cp All of these Is the ratio of thermal conductivity to thermal capacity Has the unit m² /sec Is defined as K/ρ . Cp ANSWER DOWNLOAD EXAMIANS APP
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