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Calculate transformer voltage regulation and efficiency. A transformer is an electrical device that transfers energy from one circuit to another. An electric device consisting essentially of two or more windings, wound on a common core, which by electromagnetic induction transfers. Electrical Science. Transformers vi. OBJECTIVES. TERMINAL OBJECTIVE. 1.0 Given the type of a transformer, DESCRIBE the operating characteristics and. Therefore, the electrical isolation of two sides is lost. Page 42. 3-phase transformers. The majority of the power generation/distribution systems The secondary winding is electrically connected to the energy output or load side. There is no electrical connection between the primary and secondary windings. The purpose of a transformer is to change electrical voltage to a different value. For example, a farmer has a large, 480-V, 3-phase motor powering a well. Modern transformers are designed to closer tolerances than transformers in the past. Thus, effective, regular maintenance and testing is even more essential to. ELECTRIC POWER TRANSFORMER ENGINEERING. Download Free PDF or senior-level technical person who has made a career around electric power transformers,