E9.24 A unity feedback system has a loop transfer function

Imaginary Axis K L(s) = Ge(s)G(s) = (-1+TS) where K = 0.4 and 7 = 1. The Nyquist plot for G(jw)G(jw) is shown in Figure E9.24. Determine whether the system is stable by using the Nyquist criterion. Nyquist Diagram 0.5 0.4 0.3 0.2- 0.1 0 -0.1 -0.2 -0.3 -0.4- -0.5 -0.5 -0.4-0.3-0.2-0.1 0 0.1 0.2 0.3 0.4 FIGURE E9.24 Nyquist plot for G(s)G(s) = K/(-1+ TS) where K = 0.4.