The forward path transfer function is given by G(s) = 2/s(s+3). Obtain an expression for unit step response of the system.(a) 1+2e^-t+e^-2t(b) 1+e^-t-2e^-2t(c) 1-e^-t+2e^-2t(d) 1-2e^-t+e^+2tI got this question during an interview for a job.Asked question is from Time Response of Second Order Systems in chapter Time Response Analysis, Design Specifications and Performance Indices of Control Systems

The forward path transfer function is given by G(s) = 2/s(s+3). Obtain

1.	The forward path transfer function is given by G(s) = 2/s(s+3). Obtain an expression for unit step response of the system.(a) 1+2e^-t+e^-2t(b) 1+e^-t-2e^-2t(c) 1-e^-t+2e^-2t(d) 1-2e^-t+e^+2tI got this question during an interview for a job.Asked question is from Time Response of Second Order Systems in chapter Time Response Analysis, Design Specifications and Performance Indices of Control Systems
Answer» The CORRECT ANSWER is (d) 1-2e^-t+e^+2t Explanation: C(s)/R(s) = s/(s^2+3s+2) C(s) = 1/s-2/s+1+1/s+2 c(t) = 1-2e^-t+e^+2t.

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