623Chemical EngineeringMedium
Which of the systems having the following transfer function is stable?
A1/(S2 + 2S + 2)
B1/(S2 + 2)
Cexp (-20 S)/(S2 + 2S – 1)
D1/(S2 – 2S + 3)
Correct answer
A. 1/(S2 + 2S + 2)
Explanation
The correct answer is 1/(S2 + 2S + 2).