Control Systems (ECE Perspective) – Multiple Choice Questions (MCQs)

1. Which of the following is a key characteristic of a closed-loop control system?
- A. High sensitivity to disturbances
- B. No feedback path
- C. Automatic correction of errors
- D. Simpler design
2. In a feedback control system
- A. the difference between the desired output and the actual output is called the:
- B. Input signal
- C. Output signal
- D. Error signal
3. The Laplace transform is widely used in control systems for analyzing:
- A. Time-domain response
- B. Frequency-domain response
- C. Transient and steady-state response
- D. All of the above
4. What does a pole at the origin in the s-plane indicate for a system?
- A. An integrator
- B. A differentiator
- C. A stable system
- D. An unstable system
5. The Routh-Hurwitz criterion is a method used to determine the ________ of a linear time-invariant (LTI) system.
- A. Steady-state error
- B. Transient response
- C. Absolute stability
- D. Relative stability
6. The steady-state error of a control system for a given input can be reduced by increasing the:
- A. Damping ratio
- B. Natural frequency
- C. Type of the system
- D. Gain of the system
7. A proportional-integral-derivative (PID) controller is a common type of:
- A. Feedforward controller
- B. Open-loop controller
- C. Feedback controller
- D. Sequence controller
8. Increasing the proportional gain (Kp) in a PID controller typically leads to:
- A. Increased steady-state error
- B. Decreased rise time
- C. Increased damping
- D. Decreased overshoot
9. The integral term (Ki) in a PID controller is primarily used to eliminate:
- A. Overshoot
- B. Rise time
- C. Steady-state error
- D. Settling time
10. The derivative term (Kd) in a PID controller primarily helps to improve the system's:
- A. Steady-state error
- B. Rise time
- C. Transient response (damping)
- D. Bandwidth
11. The Bode plot consists of two graphs: magnitude plot and ________ plot.
- A. Nyquist
- B. Root locus
- C. Phase
- D. Nichols
12. The gain margin and phase margin are indicators of a system's:
- A. Steady-state error
- B. Relative stability
- C. Transient response
- D. Speed of response

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AllInfoHub – MCQ Practice

Control Systems (ECE Perspective) – Multiple Choice Questions (MCQs)

1. Which of the following is a key characteristic of a closed-loop control system?

2. In a feedback control system

3. The Laplace transform is widely used in control systems for analyzing:

4. What does a pole at the origin in the s-plane indicate for a system?

5. The Routh-Hurwitz criterion is a method used to determine the ________ of a linear time-invariant (LTI) system.

6. The steady-state error of a control system for a given input can be reduced by increasing the:

7. A proportional-integral-derivative (PID) controller is a common type of:

8. Increasing the proportional gain (Kp) in a PID controller typically leads to:

9. The integral term (Ki) in a PID controller is primarily used to eliminate:

10. The derivative term (Kd) in a PID controller primarily helps to improve the system's:

11. The Bode plot consists of two graphs: magnitude plot and ________ plot.

12. The gain margin and phase margin are indicators of a system's:

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