Oilers/Plant Tenders (HHC) Civil Service Practice Exam

What is one characteristic of anti-friction bearings?

1. They require regular maintenance

2. They need very little attention

3. They are made of plastic

4. They must be lubricated continuously

The correct answer is: They need very little attention

Anti-friction bearings are designed to minimize friction between moving parts, which allows for smoother operation and increased efficiency. One characteristic that stands out is their need for very little attention, making them ideal for various applications. Unlike other types of bearings that may require frequent maintenance, such as lubrication or adjustments, anti-friction bearings are engineered to operate effectively with minimal input. This characteristic not only saves time and reduces downtime in operations but also contributes to lower operational costs, as there's less need for routine checks or servicing. In the context of the other options, maintenance and continuous lubrication contradict the inherent design and functionality of anti-friction bearings, which aim to reduce the amount of maintenance required for optimal performance. Additionally, while some bearings may be made from plastic materials, this is not a defining feature of anti-friction bearings as a whole, which can also be constructed from metals and other materials depending on their specific application. Thus, the option that highlights their minimal attention requirement accurately captures a key advantage of anti-friction bearings.