Nate Core Practice Test 2025 – Comprehensive Exam Prep

Question: 1 / 400

What is a common problem with poorly maintained electrical contacts?

Excessive resistance leading to heating

Excessive resistance leading to heating is a common problem with poorly maintained electrical contacts because when contacts are not properly maintained, dirt, corrosion, or wear can increase the resistance at the connection point. This increased resistance causes more energy to be lost in the form of heat when current passes through the connection, which can lead to further degradation of the contacts and potentially result in failure of the electrical component.

The presence of excessive heat can also create hazards, such as the risk of fire or damage to surrounding components. Proper maintenance, including cleaning and ensuring that contacts are tightly fitted, can help reduce the risks associated with resistance in electrical contacts. By understanding this issue, individuals can take proactive steps to ensure the reliability and safety of electrical systems.

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Reduced current flow

No voltage drop

Increased efficiency

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