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

In a permanent split-capacitor (PSC) motor that is running and up to speed, the start winding is:

In a permanent split-capacitor motor, the start winding stays energized during operation because a run capacitor is permanently in series with it. This capacitor creates a continuous phase shift between the currents in the start and run windings, producing a rotating magnetic field that sustains torque as the motor runs. There’s no centrifugal switch to disconnect the start winding after startup, so current continues to flow through it even when the motor is up to speed. The result is that the start winding remains energized, not open, shorted, or de-energized.

In a permanent split-capacitor motor, the start winding stays energized during operation because a run capacitor is permanently in series with it. This capacitor creates a continuous phase shift between the currents in the start and run windings, producing a rotating magnetic field that sustains torque as the motor runs. There’s no centrifugal switch to disconnect the start winding after startup, so current continues to flow through it even when the motor is up to speed. The result is that the start winding remains energized, not open, shorted, or de-energized.