What is a feedback control system?

Multiple Choice Questions Automation MCQ
1

Question:

What is a feedback control system?

Options:

A) Open loop system
B) Manual system
C) Closed loop system
D) Fixed output

View Answer

:white_check_mark: Correct Answer: C) Closed loop system

:magnifying_glass_tilted_right: Detailed Explanation

A feedback control system is another name for a closed-loop control system.

In this type of system:

  1. The process variable (PV) is measured.
  2. It is compared with the setpoint (SP).
  3. The controller calculates the error (SP − PV).
  4. The output is adjusted automatically to reduce the error.

Because the system uses feedback from the process, it can:

  • Correct disturbances
  • Maintain accuracy
  • Improve stability

:cross_mark: Why Other Options Are Incorrect

A) Open loop system
Open-loop systems do not use feedback. They cannot correct errors automatically.

B) Manual system
Manual control requires human adjustment and does not automatically use feedback logic.

D) Fixed output
A fixed output implies no correction based on process condition.

:fire: Simple Understanding

Feedback Control = Self-correcting system
No Feedback = Blind system