Compared to open-loop, closed-loop systems are typically better at maintaining accuracy under changing loads.

• A. Open-loop is better at maintaining accuracy.
• B. Closed-loop cannot handle disturbances.
• C. Closed-loop systems are typically better at maintaining accuracy under changing loads.
• D. Open-loop always costs more

Answer: (C)

The main idea is that feedback through a closed-loop system lets the system adjust in response to disturbances, so it can keep outputs accurate even when loads change. In a closed-loop setup, the actual output is measured and compared to the desired reference. Any mismatch creates an error signal, which the controller uses to tweak the input to the actuator. When loads vary, this loop detects the resulting deviation and compensates, reducing the error and preserving accuracy.

Open-loop systems, by contrast, apply a fixed input without checking the actual output. If the load changes or disturbances occur, there’s no mechanism to correct for the resulting deviation, so accuracy tends to degrade.

So, closed-loop systems are typically better at maintaining accuracy under changing loads because they continuously correct for disturbances using feedback. The other statements either ignore the role of feedback, claim a capability that isn’t supported by how these systems operate, or bring up cost, which isn’t the defining factor for accuracy under load changes.