Q. In a heat exchanger, the rate of heat transfer from the hot fluid to the cold fluid

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Q. With increase in temperature, the total emissivity of conductors

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

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Q. Fruit juice (a heat sensitive material) can be concentrated in a __________ evaporator.

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

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Q. Nusselt number is the ratio of the temperature gradient at the wall to

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Q. The Stefan-Boltzman constant depends on the

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Q. The units of resistance to heat transfer is

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Q. Thermal conductivity of a gas at low density, __________ with increase in temperature.

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Q. Nusselt number is a function of Prandtl number and __________ number of fluid in natural convection heat transfer.

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Q. __________ heat exchanger is used for chilling oil to be dewaxed.

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Q. It is not recommended to use a 1-2 shell and tube heat exchanger for a particular heat duty, whenever the LMTD correction factor is

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Q. Pick out the wrong statement.

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Q. In sub-cooled boiling,

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Q. With increase in temperature, the thermal conductivity of a gas

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Q. Which of the following parameters of the fluid is not very important, while deciding its route in a shell and tube heat exchanger?

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Q. Corrosiveness of steam condensate is due to the presence of

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Q. The driving potential for the crystal growth during crystallisation is the __________ of the solution.

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Q. jH factor for heat transfer depends upon the __________ number.

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Q. Critical value of the __________ number governs the transition from laminar to turbulent flow in free convection heat transfer.

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