The Electrical Machines 1 course discusses understanding transformers, dc generators and dc motors. Transformers include working principles, transformer construction, replacement circuits, vector diagrams, regulation, losses, efficiency and polarity, 3-phase transformer connections, tap changers, and parallel work of transformers. DC generators include construction, working principles, field strengthening systems, armature windings, brush voltage and parallel generator work. DC motors include DC motor construction, working principles, starting the motor, creating a couple, setting the direction of rotation, starting and braking the DC motor and regulating the speed of the DC motor.