Chemical Engineering - Process Control and Instrumentation - Discussion


Which of the systems having following transfer functions is stable?

[A]. 1/(s2+ 2)
[B]. 1/(s2-2s + 3)
[C]. 1/(s2 + 2s + 2)
[D]. exp(-20s)/(s2 + 2s-l)

Answer: Option C


No answer description available for this question.

Harry145 said: (Mar 6, 2015)  
Answer (C).

Roots are -1+j, -1-j..... negative real part. System stable (C).

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