The main advantage of forced draft over natural draft is that____________________?
Correct answer: D. All A., B. & C.
- A. Combustion of fuel is complete
- B. Smaller height chimney can be used
- C. Furnace control is easier
- D. All A., B. & C.
Explanation
A forced-draft fan supplies air independently of chimney height, allowing a shorter chimney, better air regulation and generally more complete combustion. Thus, all three listed advantages apply.
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