NEIEP Mechanics Practice Exam

What feature characterizes preformed rope?

1. High tensile strength

2. Wires shaped to fit the twist in the strands

3. Greater flexibility

4. Less diameter

The correct answer is: Wires shaped to fit the twist in the strands

Preformed rope is distinguished by the specific arrangement of wires that are shaped to fit the twist in the strands. This feature is crucial because it allows the rope to maintain its shape and structure under tension, improving its overall performance and longevity. By designing the wires to match the twist, manufacturers enhance the rope's ability to resist deformation, which can occur when the rope is loaded. This characteristic provides advantages in terms of handling and ease of spooling and unspooling, as the preformed configuration helps to keep the rope compact and manageable. The arrangement also contributes to a consistent performance during use, making it particularly suitable for applications where predictability and reliability are essential, such as in rigging or lifting operations. The other aspects, such as tensile strength, flexibility, and diameter, may vary depending on the specific type and material of rope but are not defining characteristics of preformed rope specifically. Therefore, the emphasis on wires shaped to fit the twist is what rightly characterizes preformed rope.