Heat Transfer Which of the following has maximum thermal conductivity? Nitrogen Coal Tar Iron Nitrogen Coal Tar Iron ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the Higher condensing film co-efficient is desired Temperature of the incoming vapor is very high Lower pressure drop through the exchanger is desired Condensate is corrosive in nature Higher condensing film co-efficient is desired Temperature of the incoming vapor is very high Lower pressure drop through the exchanger is desired Condensate is corrosive in nature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area Remains constant Decreases Increases Passes through a maxima Remains constant Decreases Increases Passes through a maxima ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the Buoyancy of the bubbles produced at active nucleation site Temperature gradient produced due to density difference None of these Existence of thermal boundary layer Buoyancy of the bubbles produced at active nucleation site Temperature gradient produced due to density difference None of these Existence of thermal boundary layer ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Reynold's analogy states that (where, St = Stanton number f = friction factor) St = 4f St = f/2 St = f/4 St = f1/2 St = 4f St = f/2 St = f/4 St = f1/2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which has the lowest Prandtl number? Water Lube oil Aqueous solution Liquid metal Water Lube oil Aqueous solution Liquid metal ANSWER DOWNLOAD EXAMIANS APP
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