What is a key benefit of using a start capacitor?

Using a start capacitor is primarily beneficial because it helps with the starting voltage of the motor. When an electric motor starts, it requires a higher voltage to overcome inertia and ensure a proper startup. The start capacitor temporarily increases the motor's voltage during the initial start-up phase, allowing it to generate a greater starting torque. Once the motor reaches operational speed, the start capacitor typically disconnects from the circuit, allowing the motor to run efficiently on its normal operating conditions.

While other options mention factors like energy consumption, capacitor life, and motor speed, those are not directly associated with the primary function of a start capacitor. Its main role is to provide the necessary boost in voltage to help the motor start effectively, leading to a smoother operation right from the beginning.