Which type of motor utilizes a run capacitor, start relay, and a start capacitor?

The Capacitor Start Capacitor Run (CSCR) Motor is characterized by the inclusion of both a start capacitor and a run capacitor, along with a start relay, which work together to enhance the motor's performance. The start capacitor provides the necessary phase shift to initiate rotation when the motor is first powered on, allowing it to start under heavy loads. Once the motor reaches a certain speed, the start relay disconnects the start capacitor, and the run capacitor remains in the circuit to improve efficiency and torque during operation.

This combination of components makes the CSCR Motor particularly effective for applications that require high starting torque. The use of both capacitors improves overall efficiency and smooth operation, highlighting the significance of each part in its functioning. The other motor types listed do not incorporate this specific combination of components for both starting and running, thus making the CSCR Motor unique in its design and application.