Multi-plate clutches are mechanical devices used to transmit power between two rotating shafts. They consist of multiple friction plates that engage and disengage to control the flow of power. This design allows for a larger surface area, which increases torque capacity and reduces the overall size of the clutch. These clutches are commonly found in applications such as automobiles, motorcycles, and industrial machinery. They provide smoother engagement and can handle higher power levels compared to single-plate clutches, making them ideal for high-performance situations where space and efficiency are critical.