AllInfoHub – MCQ Practice

Control Systems – Multiple Choice Questions (MCQs)

1. Which of the following is an example of an open-loop control system?
- A. Automatic washing machine
- B. Temperature control in an oven
- C. Cruise control in a car
- D. Automatic iron
2. The Laplace transform of a unit impulse function is:
- A. 1
- B. 1/s
- C. s
- D. e^-st
3. What is the transfer function of a system?
- A. Ratio of output to input in Laplace domain
- B. Ratio of input to output in Laplace domain
- C. Ratio of output to input in time domain
- D. Ratio of input to output in time domain
4. The Routh-Hurwitz criterion is used to determine the:
- A. Steady-state error
- B. Transient response
- C. Stability of a system
- D. Frequency response
5. 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
6. The steady-state error of a control system can be reduced by:
- A. Increasing the gain
- B. Adding a derivative controller
- C. Adding an integral controller
- D. Reducing the type of the system
7. Which type of compensator improves the steady-state error of a system?
- A. Lead compensator
- B. Lag compensator
- C. Lead-lag compensator
- D. PID controller
8. The frequency response of a system is obtained by setting s = :
- A. 0
- B. ∞
- C. jω
- D. σ
9. What is the phase margin of a stable system?
- A. Positive
- B. Negative
- C. Zero
- D. Infinite
10. A system with poles on the right half of the s-plane is:
- A. Stable
- B. Unstable
- C. Marginally stable
- D. Conditionally stable
11. The Nyquist criterion is used to determine the:
- A. Gain margin
- B. Phase margin
- C. Stability of a system
- D. Both gain and phase margin
12. What is the effect of adding a zero to the open-loop transfer function of a system?
- A. Increases overshoot
- B. Decreases rise time
- C. Increases steady-state error
- D. Decreases bandwidth

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Control Systems – Multiple Choice Questions (MCQs)

1. Which of the following is an example of an open-loop control system?

2. The Laplace transform of a unit impulse function is:

3. What is the transfer function of a system?

4. The Routh-Hurwitz criterion is used to determine the:

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

6. The steady-state error of a control system can be reduced by:

7. Which type of compensator improves the steady-state error of a system?

8. The frequency response of a system is obtained by setting s = :

9. What is the phase margin of a stable system?

10. A system with poles on the right half of the s-plane is:

11. The Nyquist criterion is used to determine the:

12. What is the effect of adding a zero to the open-loop transfer function of a system?

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