"Electrical Machines - I Laboratory Manual" has been developed for undergraduate students in Electrical Engineering, Electrical and Electronics Engineering, and related engineering programs in India. This manual comprehensively covers a range of machines, including static machines (transformers) and rotating machines (DC machines), addressing fundamental concepts and testing methods. The latest revision aligns with curriculum updates. The manual includes exercises on the characteristics of Electrical Machines, focusing on teaching the performance attributes of Transformers and DC Machines. It serves as a detailed record of experiment-related work. The record is designed to be thorough enough for individuals with a similar technical background to replicate the experiment and data by following the laboratory notebook. The authors express gratitude to all department staff members for their valuable suggestions and contributions. Dr. N. ShanmugasundaramDr. K. SushitaDr. S. Vijayaraj

Dr. N. Shanmugasundaram is working as a Head of the Department in Electrical and Electronics Engineering at VISTAS Chennai. Dr. K. Sushita and Dr. S. Vijayaraj are assistant professors at the Department of Electrical and Electronics Engineering at VISTAS Chennai.