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Chemical Engineering - Heat Transfer

Exercise : Heat Transfer - Section 6
6.
Water is normally used as a coolant in the heat exchange equipments mainly because ofits
abundance & high heat capacity
low density
low viscosity
high fluidity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
The rate of emission of radiation by a body does not depend upon the
wavelength of radiation.
surface temperature of the body.
nature of the surface.
shape and porosity of the body.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Which of the following has maximum thermal conductivity at the same temperature?
Steel
Petrol
Air
All have the same conductivity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Maximum heat transfer rate is obtained in __________ flow.
laminar
turbulent
creeping
transition region
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
In case of __________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface.
nucleate
local
pool
saturated
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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