Heat and Mass Transfer The value of Prandtl number for air is about 0.1 0.3 0.7 1.7 0.1 0.3 0.7 1.7 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In a shell and tube heat exchanger, baffles are provided on the shell side to Provide support for tubes Prevent stagnation of shell side fluid Improve heat transfer All of these Provide support for tubes Prevent stagnation of shell side fluid Improve heat transfer All of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal conductivity of water at 20°C is of the order of 0.42 0.51 0.1 0.23 0.42 0.51 0.1 0.23 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The heat is transferred by conduction, convection and radiation in None of these Boiler furnaces Condensation of steam in condenser Melting of ice None of these Boiler furnaces Condensation of steam in condenser Melting of ice ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According of Kirchhoff's law Emissive power depends on temperature Emissive power and absorptivity are constant for all bodies Ratio of emissive power to absorptive power for all bodies is same and is equal to the emissive power of a perfectly black body Radiant heat is proportional to fourth power of absolute temperature Emissive power depends on temperature Emissive power and absorptivity are constant for all bodies Ratio of emissive power to absorptive power for all bodies is same and is equal to the emissive power of a perfectly black body Radiant heat is proportional to fourth power of absolute temperature ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The highest thermal diffusivity is of Lead Concrete Wood Iron Lead Concrete Wood Iron ANSWER DOWNLOAD EXAMIANS APP
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