Discussion
Statement I: Nitrogen oxides and carbon monoxide peak at opposite ends of the power range.
Statement II: One is formed by high flame temperature and the other by incomplete oxidation at low temperature.
In the light of the above statements, choose the correct answer.
Answer: D
Both hold and the second explains the opposition. No single operating condition minimises every regulated emission, which is exactly why staged and lean premixed combustors exist to change the trade rather than merely to optimise within it.
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