June 12, 2021

Time Response of Control Systems – 2 MCQ’s

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This set of MATLAB Multiple Choice Questions & Answers (MCQs) focuses on “Time Response of Control Systems – 2″.

1. For a step response of the system 1/s2+1, the maximum overshoot is __________
a) 1
b) 0
c) Infinite
d) 2

2. What is the gain of the system derived from the following code?

tf[1,100]

a) 1/100
b) s/100
c) 1/100s
d) Error

3. The steady state error of the system with a forward path transfer function G(s)=13(s-1)/(s-1) and with a parabolic input is _______
a) Infinite
b) 0
c) -Infinite
d) Undefined

4. What is the output of the following code?

r.DampingRatio = 0;
overshoot = getOvershoot(r);

a) 100
b) 0
c) 1
d) Error

5. What is the output of the following code?

step(impulse(1,[1 0]))

a) A ramp function
b) A parabolic function
c) A step function
d) Error

6. Which of the following command generates the transfer function of a system?
a) tf()
b) tf[]
c) tf{}
d) No such command

7. Which of the following command generates the impulse response of a system which has more zeros than poles?
a) impulse()
b) impulse[]
c) impulse{}
d) No such command

8. What is the output of the following code?

step([1],[1 0 0])

a) A parabola
b) A ramp function
c) A step function
d) An impulse function

9. Which of the following command gives the step response characteristics of a control system?
a) stepinf()
b) stepinfo()
c) stepinfo[]
d) step()

10. The time constant of a system is ________
a) equal to the damping constant
b) inverse of the damping constant
c) twice the damping constant
d) half of the damping constant

11. The settling time is a measure of _________
a) The speed of reaching stead state
b) The speed of reaching maximum overshoot
c) The speed of reaching second overshoot
d) Nothing

12. If the natural frequency of a system increases, the rise time ________
a) Increases
b) Decreases
c) Doubles
d) Halves

13. An undamped system is stable.
a) True
b) False

14. For negative damping, the system is unstable.
a) True
b) False

15. If the poles of a system transfer function are equal and imaginary, the system is ________
a) Undamped
b) Critically damped
c) Overdamped
d) Negatively damped

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