Natural draught produced by a chimney depends upon the _____________________?
Correct answer: C. Both A. and B.
- A. Density of the chimney gases
- B. Height of the chimney
- C. Both A. and B.
- D. Neither A. nor B.
Explanation
Chimney draft is produced by the density difference between hot chimney gases and outside air, and it increases with chimney height. Thus both gas density and chimney height affect the natural draught.
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