3.1 - INTRODUCTION3.2 - REPRESENTATION OF LINES3.3 - CLASSIFICATION OF TRANSMISSION LINES3.4 - SHORT TRANSMISSION LINE3.4.1 - Effect of Power Factor On Regulation and Efficiency3.5 - GENERALISED NETWORK CONSTANTS3.6 - A, B, C, D CONSTANTS FOR SHORT TRANSMISSION LINES3.7 - MEDIUM TRANSMISSION LINE3.7.1 - Load End Capacitance Method3.7.2 - Nominal-T Method3.7.3 - Nominal-π Method