Prepare for the essential 636 Period 3 Motor Final Test with comprehensive flashcards and detailed questions. Access explanations and hints for each question to ace your exam!

Multiple Choice

The component primarily responsible for creating a phase shift between windings in a PSC motor is:

In a PSC motor the two windings must be driven in a way that their magnetic fields are out of step so a rotating field is produced. This phase difference is created by the capacitor placed in series with the auxiliary winding. The run capacitor causes the current in that winding to lead the current in the main winding, creating the necessary phase shift to generate torque continuously during running. The rotor itself doesn’t create or set this phase relationship. A relay is used in capacitor-start motors to disconnect the start winding after start, but in a PSC motor the capacitor remains in circuit to maintain the phase shift. So the component responsible for creating the phase shift between windings is the run capacitor.

In a PSC motor the two windings must be driven in a way that their magnetic fields are out of step so a rotating field is produced. This phase difference is created by the capacitor placed in series with the auxiliary winding. The run capacitor causes the current in that winding to lead the current in the main winding, creating the necessary phase shift to generate torque continuously during running. The rotor itself doesn’t create or set this phase relationship. A relay is used in capacitor-start motors to disconnect the start winding after start, but in a PSC motor the capacitor remains in circuit to maintain the phase shift. So the component responsible for creating the phase shift between windings is the run capacitor.