31. The unit of heat transfer co-efficient is
32. If average heat transfer co-efficient is $${{\text{h}}_{\text{a}}}$$ and the local coefficient at the end of the plate is $${{\text{h}}_l}$$ then in case of heat transfer to a fluid flowing over a flat plate, heated over its entire length
33. At Pr > 1, conduction in an ordinary fluid flowing through a heated pipe is limited to the
34. When vaporisation takes place directly at the heating surface, it is called
35. Which is the most suitable for the con-certration of highly concentrated solution?
36. View factor is important in heat transfer by
37. Thermal diffusivity is the most important in heat transfer by
38. Tube expansion allowances exist in __________ heat exchanger.
39. In case of a shell and tube heat exchanger, the minimum and maximum baffle spacing is respectively (where, D = inside diameter of the shell)
40. Mode of heat transfer involved in the cooling of air cooled internal combustion engine is
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