Why rotor winding in slip ring induction motor connected in star?

In a slip ring induction motor, the rotor winding is connected in a star configuration to provide better control over the rotor current and torque characteristics. This connection allows for a higher starting torque and smoother acceleration compared to a delta connection. Additionally, the star configuration can help reduce the phase current, which is beneficial during startup, especially in high-power applications. Overall, it enhances motor performance and efficiency.