Moderate
White smoke coming out of the chimney of a furnace indicates the use of_________________?
Correct answer: B. Very high excess air
- A. Low excess air
- B. Very high excess air
- C. Gaseous fuel in the furnace
- D. Liquid fuel in the furnace
Explanation
Very high excess air dilutes and cools the furnace gases, increasing the chance that water vapour condenses and appears as a white plume at the chimney. White smoke is therefore not, by itself, an indication that the fuel must be gaseous or liquid.
Written and checked by Zahid Hussain, MS Computer ScienceLast updated
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