In this article, you will learn three principle methods of magnetizing a steel bar. If a piece of iron or steel is brought near either of the poles of a magnet, it is attracted. If a north pole of a …
A DC motor can be made using different types of armatures based on its application. There are 2 types of armatures. Gramme Ring Armature Drum Wound Armature Gramme Ring Armature The Gramme-ring armature is constructed by winding an insulated wire …
Three-phase transformers are used in three-phase circuits to step up and step down the voltage according to the needs in a power system. You know that electric power is generated and transmitted using a three-phase system. The three-phase system has …
Open Delta Connection is a method of transformer connection used to transform three-phase power using two single-phase transformers. In this article, you will learn how this connection is done and the theory behind this. The Scott connection is another method …
What is a switching station? A switching station is a substation that does not contain power transformers and therefore does not change system voltage from one level to another. Switching stations usually operate at sub-transmission or transmission voltage levels. Depending …
The electromagnetism lecture notes is a book to provide an introduction to Electromagnetism for Electrical and Electronics Engineers. These are compiled by David Tong, Department of Applied Mathematics and Theoretical Physics, University of Cambridge. You can download the book from …
This is the complete guide to learn electrical engineering basics in 2019. The study of electrical engineering involves the analysis of the energy transfer from one form to another or from one point to another. So before beginning the actual …
An amplidyne is an electromechanical amplifier with the characteristics of a rotating machine. It was invented prior to the second world war by Ernst Alexanderson. An amplidyne is a special-purpose DC generator. It comprises an electric motor that turns a …
This article covers transformer impedance testing, one of the acceptances tests for new transformers, and a method for routine testing. The results of this test should compare directly to the manufacturer’s datasheet. Related: Percentage Impedance of Transformer Application of Transformer …