Rotating machines are devices that convert energy into mechanical work through rotational motion. Common examples include electric motors, turbines, and generators. These machines typically consist of a rotor, which spins around a fixed part called the stator, and they are widely used in various applications, from powering household appliances to generating electricity in power plants. The efficiency and performance of rotating machines depend on their design and the materials used. Factors such as speed, torque, and load capacity are crucial for their operation. Understanding the principles of mechanical engineering and electromagnetism is essential for optimizing these machines in industrial and commercial settings.