1.
Reynold's analogy states that

2.
For hot feed, forward feeding as compared to backward feeding results in __________ economy.

3.
A sphere of radius 'R₁' is enclosed in a sphere of radius 'R₂'. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is

4.
Double pipe heat exchangers are preferably useful, when

5.
Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the

6.
(Cp . μ)/K is termed as the __________ number.

7.
Thermal diffusivity of a material

8.
Pick out the wrong statement.

9.
Sensible heat of hot industrial flue gases can not be recovered by a/an

10.
In a boiling curve, the peak heat flux is called the __________ point.

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