What role does a capacitor play in a capacitor start motor?

Prepare for the SACA Electric Motor Control Systems 1 (C-202) Test. Utilize multiple choice questions and in-depth resources. Logical, structured insights for your success!

In a capacitor start motor, the primary function of the capacitor is to provide the necessary starting torque. When the motor is energized, the capacitor creates a phase shift in the current supplied to the start winding of the motor. This phase shift allows for the development of a strong magnetic field that generates the torque required to start turning the rotor.

Once the motor reaches a certain speed, a centrifugal switch or relay typically disconnects the capacitor from the circuit, as it is no longer needed for maintaining operation at that point. The capacitor's role in providing that initial boost of torque is critical because it allows the motor to overcome inertia and start operating efficiently.

The functionalities of regulating voltage, maintaining consistent speed, or reducing noise during operation are more characteristic of other motor components or designs rather than the capacitor in a capacitor start motor.

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