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Which outcome occurs when a turbine engine runs lean?

A)Increased flame temperature occurs.
B)Reduced incomplete combustion results.
C)Erosion resistant blade coatings form.
D)Thicker boundary layer develops normally.

💡 Explanation

Increased flame temperature results from leaner burn because the ratio shifts, changing the reaction. Reduced fuel causes the runaway HEAT production by faster OXIDATION, therefore overheating results, rather than cleaner combustion or better blade coating which require precise control.

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