Question: Which of the following is NOT a characteristic of closed-loop systems?

Options:

1. They can automatically correct errors.
2. They require a reference input.
3. They are always faster than open-loop systems.
4. They can be more complex than open-loop systems.

Correct Answer: They are always faster than open-loop systems.

Solution:

Closed-loop systems are not necessarily faster than open-loop systems; their speed depends on the design and parameters of the system.