What device converts mechanical energy into electrical energy?

Generator

Thomas Edison and Nikola Tesla were central figures in the development and promotion of generated electricity. Edison, a staunch advocate of direct current (DC), contributed to the creation of the first power stations, laying the groundwork for modern electricity use. Tesla, on the other hand, invented the alternating current (AC) system, which is more efficient for long-distance transmission. Their rivalry, known as the "War of Currents," ultimately saw the victory of Tesla's system, which has become the global standard for electricity distribution.