Top 10 Heat Transfer Objective type Questions and Answers pdf

1. At constant temperature, the thenual conductivities of gases with rise in pressure

2. Fruit juice (a heat sensitive material) can be concentrated in a ________ evaporator

3. In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of

4. Low thermal conductivity of heat insulating materials is due to its

5. Value of Nusselt number [Nu = (hD/k)] for the heat transfer by conduction from a droplet or a spherical particle to a surrounding stagnant film is

6. Tubes are held between top and bottom tube sheets in Calenderia type evaporator by keeping

7. Small scale evaporation is done in a

8. With increase in temperature, the total emissivitv of conductors

9. Loss of heat from untagged steam pipe to the ambient air is by

10. Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is