Equipment operating with a poor power factor may result in ___.

• A. A reduced lifespan
• B. Increased efficiency
• C. Either a or b
• D. Neither a nor b

Answer: (A)

When power factor is poor, more current is needed to deliver the same real power. That extra current increases I^2R losses in conductors and equipment, causing more heat. Sustained heating can stress insulation and components, accelerating wear and reducing the equipment’s life. It doesn’t make things more efficient; in fact, efficiency typically worsens due to the additional losses from the increased current. Therefore, the outcome that best fits is a reduced lifespan. The option suggesting increased efficiency isn’t correct because poor power factor doesn’t improve performance, and the combination options aren’t applicable.