Which of the following best describes the consequence of belt misalignment besides wear?

• A. Increased energy efficiency.
• B. Edge wear and belt fraying.
• C. Reduced noise.
• D. Longer belt life.

Answer: (B)

When a belt isn’t tracking true on the pulleys, the edges rub against pulley flanges or guides. That edge-on-edge contact creates abrasion along the belt’s edges, leading to edge wear and fraying. This kind of damage is a direct result of misalignment and is a distinct sign of tracking problems that can quickly shorten belt life if not corrected.

Other options don’t fit because misalignment usually increases, not decreases, friction and slip, which lowers—not boosts—energy efficiency. It also tends to raise noise and vibration rather than reduce them. And instead of extending belt life, misalignment accelerates wear, shortening how long the belt lasts.