Oilers/Plant Tenders Civil Service Exam Practice 2025 – Complete Preparation Guide

Question: 1 / 440

Light-bodied oils are most suitable for __________.

Heavy loads at low speeds

Light loads at high speeds

Light-bodied oils are particularly advantageous for light loads at high speeds due to their lower viscosity, which allows them to flow more easily and reduce friction between moving parts. This property is crucial in high-speed applications, where thicker oils could impede motion and result in increased wear or resistance.

When utilizing light-bodied oils, the ability to conform to the surfaces it lubricates ensures efficient operation without causing excessive drag, thus promoting smoother performance and potentially enhancing machine efficiency. These oils are ideal for scenarios where rapid movement occurs, such as in high-speed bearings or components in machinery that operate with lighter loads.

In contrast, heavier loads or variable speeds typically require oils with higher viscosity that can effectively withstand increased pressure or dynamic conditions without breaking down.

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Medium loads at variable speeds

None of the above

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