Heat and Mass Transfer Heat transfer takes place as per Kirchoff's law Second law of the thermodynamics First law of thermodynamic Zeroth law of thermodynamics Kirchoff's law Second law of the thermodynamics First law of thermodynamic Zeroth law of thermodynamics ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The ratio of Nusselt number and the product of Reynold's number and Prandtl number is equal to Stanton number Grashoff number Biot number Peclet number Stanton number Grashoff number Biot number Peclet number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In convection heat transfer from hot flue gases to water tube, even though flow may be turbulent, a laminar flow region (boundary layer of film) exists close to the tube. The heat transfer through this film takes place by Convection Conduction Radiation Both convection and conduction Convection Conduction Radiation Both convection and conduction ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer LMTD in case of counter flow heat exchanger as compared to parallel flow heat exchanger is Depends on the area of heat exchanger Same Higher Lower Depends on the area of heat exchanger Same Higher Lower ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A designer chooses the values of fluid flow rates and specific heats in such a manner that the heat capacities of the two fluids are equal. A hot fluid enters the counter flow heat exchanger at 100°C and leaves at 60°C. A cold fluid enters the heat exchanger at 40°C. The mean temperature difference between the two fluids is 40°C 66.7°C 20°C 60°C 40°C 66.7°C 20°C 60°C ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A steam pipe is to be lined with two layers of insulating materials of different thermal conductivities. For the minimum heat transfer, One could place either insulation on either side One should take into account the steam temperature before deciding as to which insulation is put where The better insulation must be put outside The better insulation must be put inside One could place either insulation on either side One should take into account the steam temperature before deciding as to which insulation is put where The better insulation must be put outside The better insulation must be put inside ANSWER DOWNLOAD EXAMIANS APP
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