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1 wattmeter applicatio 1.1 one-wattmeter method 1.2 blondell's theorem 1.3 two-wattmeter method 1.4 three-wattmeter method 2 advanced three-phase systems 2.1 introduction 2.2 three-phase systems 2.3 complex power 2.4 reactive power exercise 2.1 2.5 power measurement in three-phase systems exercise 2.2 2.6 symmetrical components exercise 2.3 3 theory of power tramission 3.1 inter-connected systems exercise 3.1 3.2 power generation and power economics exercise 3.2 3.3 per-unit systems exercise 3.3 4 alternating and direct current distribution systems 4.1 introduction 4.2 requirements for good distribution systems 4.3 classification of distribution systems 4.4 connection circuits of distribution systems 4.5 direct current distribution systems 4.6 alternating current distribution systems exercise 4.1 5 electric lighting system 5.1 introduction 5.2 trouble shooting with luminaires 5.3 lighting design 5.4 production of radiation 5.5 lamp materials 5.6 definitions 5.7 lamps 5.8 lighting controls 5.9 emergency lighting 6 harmonics in poly-phase circuits 6.1 star-connection 6.2 delta-connection 6.3 equivalent star and delta voltages of baianced, three-phase systems which have non-sinusoidal waves and that contain only odd harmonics exercise 6.1