In the 1890s, there was considerablecontroversy over whether the electric utilityindustry should be standardized on dc or ас.There were passionate arguments betweenEdison, who advocated dc, and Westinghouse,who favoured ас. By the turn of the century, theас system had won out over the dc system forthe following reasons:Voltage levels can be easily transformed in асsystems, thus providing the flexibility for use ofdifferent voltages for generation, transmission,and consumption.AC generators are much simpler than dcgenerators.AC motors are much simpler and cheaper thandc motors.