1. BASIC CLASS NOTES FOR ELECTRICAL ENGINEERS Note: Initially, this part of class notes were started in 1970, apology for inevitable delay. 1.1. Electrical Power Q1. In HT 3- phase transmission lines, why we use 5-cables. Q2. What is the purpose of Corona Ring? Q3. Most power lines incorporate 50 or 60 cycle/sec filters. In … Continue reading 1. BASIC CLASS NOTES FOR ELECTRICAL ENGINEERS