Understanding Control Systems

1. In an open loop control system, the output is: A) Independent of control input B) Dependent on control input C) Only affected by system parameters D) None of the above

• A) Independent of control input

• Only influenced by external factors

• Completely random and unpredictable

• Dependent on feedback

2. For an open control system, which of the following statements is incorrect? A) Less expensive B) Recalibration is not required C) Construction is simple D) Errors are caused by disturbances

• A) More complex

• B) Requires frequent recalibration

• C) Higher construction costs

• D) Errors are caused by disturbances

3. A control system in which the control action is dependent on the output is known as: A) Closed loop system B) Semiclosed loop system C) Open system D) None of the above

• C) Feedback system

• B) Open loop system

• A) Closed loop system

• D) Linear control system

4. Which of the following is a characteristic of a closed loop control system? A) Feedback is used B) No feedback is used C) Simple construction D) Low cost

• D) High cost

• C) Complex construction

• B) Feedback is always used

• A) Feedback is used

5. In a feedback control system, the output is compared with: A) Desired input B) Actual input C) System parameters D) None of the above

• A) Desired input

• D) Control parameters

• B) Expected output

• C) Feedback signal

6. What is the primary advantage of a closed loop system over an open loop system? A) Simplicity B) Cost-effectiveness C) Accuracy D) Speed

• C) Accuracy

• A) Complexity

• D) Inflexibility

• B) High maintenance

7. Which of the following is NOT a component of a control system? A) Controller B) Actuator C) Sensor D) Generator

• D) Relay

• D) Motor

• D) Generator

• D) Switch

8. In control systems, disturbances are: A) Desired inputs B) Unwanted inputs C) Feedback signals D) Control signals

• A) Controlled inputs

• D) Reference signals

• C) System outputs

• B) Unwanted inputs

9. Which type of control system is typically more complex? A) Open loop B) Closed loop C) Both are equally complex D) None of the above

• C) Open loop is more complex

• D) Closed loop is simpler

• A) Feedback loop

• B) Closed loop

10. The main purpose of a control system is to: A) Maintain a desired output B) Minimize costs C) Maximize input D) Simplify operations

• F) Reduce output variability

• E) Increase system complexity

• G) Enhance user experience

• A) Maintain a desired output