Which of the systems having following transfer functions is stable?
A. $$\frac{1}{{{{\text{s}}^2} + 2}}$$
B. $$\frac{1}{{{{\text{s}}^2} - 2{\text{s}} + 3}}$$
C. $$\frac{1}{{{{\text{s}}^2} + 2{\text{s}} + 2}}$$
D. $$\frac{{{\text{exp}}\left( { - 20{\text{s}}} \right)}}{{{{\text{s}}^2} + 2{\text{s}} - 1}}$$
Answer: Option C
This Question Belongs to Chemical Engineering >> Process Control And Instrumentation
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