In Biot number, the characteristic length used is the ratio of the _______________ of the solid?
Correct answer: A. Volume to surface area
- A. Volume to surface area
- B. Perimeter to surface area
- C. Surface area to volume
- D. Surface area to perimeter
Explanation
For a solid of general shape, the characteristic length in the Biot number is V/A, the volume divided by the exposed heat-transfer surface area. This gives Bi = h(V/A)/k.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Heat Transfer Operations
645 free Heat Transfer Operations MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Heat Transfer Operations questions
Loss of heat from untagged steam pipe to the ambient air is by __________________?
Radiation energy is emitted by all the substances, which are above____________________?
Nusselt number is a function of Prandtl number and ______________ number of fluid in natural convection heat transfer?
Boiling point elevation for a strong and concentrated solution is found by Duhring's rule, which states that at the same pressure, the boiling point of a solution is a linear function of the _______________ of pure water?
Stefan-Boltzmann law which describes the radiation heat transfer states that, it is proportional to (where, t = temperature in °C T = absolute temperature in ° K) ?
The equation, (NSt × N2/3 Pr) = f/2, is the ____________ analogy ?