aircraft systemsFAA-published sample question (AGI, Aug 2021)
When the pilot leans the mixture control, what is being accomplished?
A
The volume of air entering the carburetor is being reduced.
B
The volume of air entering the carburetor is being increased.
C
The amount of fuel entering the combustion chamber is being reduced.✓ Correct Answer
Explanation
The mixture control meters fuel; leaning reduces the amount of fuel entering the combustion chamber to match the lower air density (PHAK Chapter 7). It does not change the volume of air entering the carburetor, which is governed by the throttle.
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