What causes rotor to get lock?

Rotor lock can occur due to several factors, such as mechanical binding, insufficient lubrication, or contamination within the rotor assembly. It may also result from electrical issues, such as short circuits or power supply problems, which prevent the rotor from turning freely. Additionally, misalignment of components or physical obstructions can contribute to rotor lock. Regular maintenance and inspection are essential to prevent these issues and ensure smooth operation.