Industrial Maintenance Technician Practice Test 2025 – Your All-in-One Guide to Exam Success!

The term "Slip" is specifically associated with induction motors. In the context of induction motors, slip refers to the difference between the synchronous speed of the stator's magnetic field and the actual rotor speed. It is an important concept because slip is what allows induction motors to produce torque. The rotor in an induction motor does not rotate at the same speed as the magnetic field produced by the stator; instead, it lags behind, and this difference in speed generates the necessary rotational force.

As the load on the motor increases, the rotor slows down slightly, increasing the slip and, consequently, the torque produced. This characteristic is critical in applications where varying loads are present, as induction motors can adjust their speed accordingly by changing the slip.

Other types of motors, such as direct current, synchronous, and universal motors, do not operate on the principle of slip. Direct current motors run at a constant speed determined by the input voltage and load, synchronous motors run at synchronous speed with the electric supply frequency, and universal motors can operate on both AC and DC but are not influenced by the concept of slip in the same way that induction motors are.