aircraft systemsFAA-published sample question (AGI, Aug 2021)
Adding more oil to the fuel than specified by the manufacturer of a 2-cycle engine will result in
A
increased engine performance.
B
increased carbon buildup and engine fouling.✓ Correct Answer
C
increased engine lubrication and optimal performance.
Explanation
Two-stroke engines are lubricated by oil mixed into the fuel at the manufacturer's ratio; too much oil does not improve lubrication but leads to excessive carbon buildup and spark plug fouling. Performance decreases rather than increases.
Related aircraft systems questions
If the ground wire between the magneto and the ignition switch becomes disconnected, the most notice...When the pilot leans the mixture control, what is being accomplished?The reason for variations in geometric pitch (twisting) along a propeller blade is that itWhat should a pilot do if a small hole is seen in the fabric of a balloon during inflation?The pilot controls the air/fuel ratio with the
Keep practising
Study more FAA Flight Instructor questions, or take a timed practice quiz.