Heat and Mass Transfer The value of Prandtl number for air is about 0.7 0.3 1.7 0.1 0.7 0.3 1.7 0.1 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In counter flow heat exchangers Both the fluids at inlet are in their hottest state One fluid is in hottest state and other in coldest state at inlet Both the fluids at inlet (of heat exchanger where hot fluid enters) are in their coldest state Both the fluids at exit are in their hottest state Both the fluids at inlet are in their hottest state One fluid is in hottest state and other in coldest state at inlet Both the fluids at inlet (of heat exchanger where hot fluid enters) are in their coldest state Both the fluids at exit are in their hottest state ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The rate of heat flow through a body is Q = [kA (Tâ - Tâ)]/x. The term x/kA is known as Thermal coefficient None of these Thermal conductivity Thermal resistance Thermal coefficient None of these Thermal conductivity Thermal resistance ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Thermal diffusivity is a Physical property of a substance Dimensionless parameter Function of temperature All of these Physical property of a substance Dimensionless parameter Function of temperature All of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Cork is a good insulator because it has Atoms colliding frequency Porous body Low density Free electrons Atoms colliding frequency Porous body Low density Free electrons ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following has least value of conductivity? Air Water Glass Plastic Air Water Glass Plastic ANSWER DOWNLOAD EXAMIANS APP
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