AMP - Aviation Maintenance Technician Powerplant Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

Which of the following factors has the least effect on the oil consumption of a specific engine?

Mechanical efficiency

Mechanical efficiency is a measure of how well an engine converts fuel into mechanical energy, so a higher efficiency generally results in less fuel consumption. Therefore, mechanical efficiency would have the least effect on oil consumption as it is not directly related to the lubrication of the engine. The other options are factors that directly impact the amount of lubricant needed for the engine, such as the speed of the engine (rpm), the characteristics of the lubricant used, and how often the engine is used. These factors can all contribute to the amount of oil that needs to be used and therefore have a greater effect on oil consumption than mechanical efficiency.

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Engine rpm

Lubricant characteristics

Frequency of use

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