Agricultural Mechanics EOPA Practice Exam

Question: 1 / 870

What is a key function of the bearing in an engine?

To create a seal for the crankcase

To reduce friction between moving parts

The primary function of a bearing in an engine is to reduce friction between moving parts. Bearings serve as a support structure that allows components, such as the crankshaft and connecting rods, to rotate smoothly and with minimal resistance. By providing a smooth surface for these parts to move against, bearings help to minimize wear and tear, dissipate heat generated from friction, and enhance overall engine performance. This friction reduction is crucial for maintaining the efficiency and longevity of engine components and for preventing overheating and failure.

While bearings may indirectly influence factors such as fuel efficiency and cylinder pressure by enabling smoother operation, their main purpose is centered around minimizing friction, which is essential for the reliable functioning of an engine.

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To enhance fuel efficiency

To maintain cylinder pressure

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