6 B4. Consider a second order system described by the transfer function 1 H(s) = s+8s+15 (a) What are the poles of this system? (b) Is this system stable or not? (c) [10%] [10%] Consider a proportional controller Kp is applied. What is the negative feedback closed loop transfer function for the system with controller Kp. [40%] (d) Consider a step input is applied to the closed loop system. When the value of proportional controller gain Kp increases, how will the closed loop system poles change? This study source was downloaded by 100000866456734 from Course Hero.com on 05-01-2023 01:34:50 GMT-05:00 https://www.coursehero.com/file/151900673/MN5552-exam-paper-2021-Maypdf/ [40%]