In this edition I have the author tried to present the introductory to both the approachers, intending to build a synergy of both the approaches, keeping in mind the system, in vogue a decade back, in Indian Universities that steady-state analysis would be mainly covered in the undergraduate curriculam followed by transient and dynamic studies in the post-graduate level. However, during the last decade or so, there has been a sea change, specially in the Power Engineering curriculum, in view of more and more emphasis on digital electronics and computer, environmental studies.