Yes, many microwave ovens are equipped with a rotating plate, often called a turntable. The primary purpose of the rotating plate is to ensure more even cooking and heating of the food inside the microwave.
When you place food on the turntable and start the microwave, the turntable spins in a circular motion. This rotation helps distribute the microwave radiation more uniformly throughout the food, preventing hotspots and cold spots. As a result, the food is heated more consistently, and there is less need to stop and manually stir or rearrange the items during cooking.
The turntable is usually made of glass or microwave-safe material and can be easily removed for cleaning. Some microwave models offer the option to disable the turntable rotation for cooking larger or irregularly shaped items that might not fit or benefit from the rotating motion.