The second order system with the transfer function 4/(s2 + 2s + 4) has a damping ratio of ___________________?
Correct answer: B. 0.5
- A. 2.0
- B. 0.5
- C. 1.0
- D. 4.0
Explanation
Compare the denominator with s² + 2ζωₙs + ωₙ²: here ωₙ² = 4 gives ωₙ = 2, and 2ζωₙ = 2 gives ζ = 0.5. Thus the system is underdamped.
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