What are slip and slip speed in an induction motor?

Slip in an induction motor is the difference between the synchronous speed of the magnetic field and the actual rotor speed, expressed as a percentage of the synchronous speed. It is calculated using the formula: Slip = (Synchronous Speed - Rotor Speed) / Synchronous Speed. Slip speed, on the other hand, refers to the actual difference in RPM between the synchronous speed and the rotor speed. This slip is crucial for the operation of the motor, as it is what allows the rotor to develop torque.