What distinguishes a balanced actuator from an unbalanced actuator?

A balanced actuator is characterized by having equal working areas on both sides of the piston. This design allows for equal force to be applied in both directions, which results in improved stability and control during operation. The balanced nature of the actuator means that it can respond more efficiently to changes in control input, providing a smoother and more precise movement.

In contrast, an unbalanced actuator typically features different working areas on either side of the piston, leading to different forces during operation. This can result in a tendency for the actuator to favor one direction over another, which can cause instability or less precision in control.

The other choices refer to different characteristics that do not effectively differentiate between balanced and unbalanced actuators.