From fire to electricity, the human civilization continues to unfold through advances in science and technology. All of this progress has been built on the acquisition and harnessing of different forms of energies. Likewise, the great technological innovations of the recent century or so are made possible by evolutionary changes in the delivery of electricity to end-users. Since the rivalry between Thomas Edison and Nikola Tesla more than a hundred years ago, DC and AC have been competing for supremacy in an ever-expanding range of power applications. The course of the rivalry i...