Which of the following is true regarding electric hoist systems?

Electric hoist systems are specifically designed to be powered by electric motors, which utilize electrical energy to facilitate lifting operations. The correct response accurately reflects that electric hoist systems operate primarily through electric power rather than hydraulic means. While hydraulic systems use hydraulic pumps to generate lifting force, electric hoists do not rely on this method; instead, they leverage electric motors to achieve lifting movements.

The other options fail to accurately describe electric hoist systems. Electric hoists do not run solely on batteries, as many are powered directly from an electrical outlet, although some models may have battery backup systems, but this isn't their primary source of power. Additionally, they do not create high pressure with a hydraulic pump, a characteristic specific to hydraulic systems. Lastly, electric hoists are designed for efficiency and reliability, which means they are not powered by human effort; instead, they automate lifting tasks, reducing the physical strain on workers.