Transformer MCQ Questions And Answer | Electrical Engineering

A Transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Its primary function is to step up (increase) or step down (decrease) voltage levels while maintaining the same frequency. By utilizing a shared magnetic core and two sets of windings—the Primary and Secondary—transformers allow for the efficient transmission of power over long distances, minimizing energy loss.

Transformer EMF Equation, Equivalent Circuit Parameters, Efficiency and Regulation, and Three-Phase Transformer Connections (Star-Delta, Scott connection) is essential for success in competitive exams like GATE, IES, and SSC JE. It is the most fundamental machine in electrical engineering, serving as the bridge between power generation and daily life.