Maintenance Technician 2025 Complete Practice Test

Question: 1 / 400

A sag in an overhead power line is required to reduce:

Operating temperature

Power waste

Tension in the line

The sag in an overhead power line is essential as it helps to maintain the tension within the line at manageable levels. When a power line has a certain amount of sag, it allows for the natural thermal expansion and contraction of the wire without creating excessive tension. This is particularly important because high tension can lead to structural issues, such as increased wear on poles and insulators, and can also cause the line to break under stress. Furthermore, the proper amount of sag contributes to the stability of the line, preventing unnecessary strain during high winds or storms.

While sagging does not directly influence the operating temperature, power waste, or corrosion, it plays a crucial role in ensuring that the line remains safe and functional under various conditions.

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Corrosion

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