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Higher Study | Heat Transfer | Convection

Water boils when its vapor pressure
When a fluid flows through a tube with sub cooled or saturated boiling, what is the process known
When the state is being changed from gas to liquid through the process of condensation, the temperature?
The thermal boundary layer is a region where:
Air at 20°C blows over a hot plate of 50 × 60 cm2 made of carbon steel maintained at 220°C. The convective heat transfer coefficient is 25 W/m2.K. What will be the heat loss from the plate?
The back surface of a plate is heated at the rate of 50 W/m2 and the front surface is cooled by airflow at 30°C. It is given that the heat transfer coefficient between the air and the plate surface is 50 W/m2–K. Considering steady-state heat transfer, what is the temperature (in °C) of the front surface of the plate.
For which of these configurations is a minimum temperature difference required for natural convection to set in 
Which one of the following regimes of bowling curve can be considered as reverse of condensation?
Which of the following is not the regimes of pool boiling?
In transition boiling, heat flux decreases due to which of the following? 1. Low value of film heat transfer coefficient at the surface during 100°C to 120°C surface temperature. 2. Major portion of heater surface is covered by vapour film which has smaller thermal conductivity as compared to liquid. 3. Nucleate boiling occurs very fast. Select the correct answer using the code given below.
Consider the following statements: For the laminar condensation on a vertical plate, the Nusselt theory says that 1. inertia force in the film is negligible compared to viscosity and weight 2. heat flow is mainly by conduction through the liquid film, convection in liquid film as well as in vapour is neglected. 3. velocity of vapour is very high Which of the above statements are CORRECT?
Which one of the following modes of heat transfer would take place predominantly from boiler furnace to water wall?
Which are the correct statements? (a) Film condensation usually occur on oily surface. (b) Temperature of condensate gradually increases towards the liquid-vapour interface. (c) Suitable coating is used to promote dropwise condensation. (d) Dropwise condensation gives lower heat transfer rate than film condensation.
What happens when the air is heated ?
For steady, fully developed laminar flow in a circular tube which is subjected to constant surface heat flux, the value of Nusselt number is constant and given by:
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