Question: 6. Consider the closed-loop system in Figure 9.69 where The crossover frequency and the phase margin are: a. = 2.0 rad s, P M
6. Consider the closed-loop system in Figure 9.69 where

The crossover frequency and the phase margin are:
a. ω = 2.0 rad s, P M. . = 37.2°
b. ω = 2.6 rad s, P M. . = 54.9°
c. ω = 5.3 rad s, P M. . = 68.1°
d. ω = 10.7 rad s, P M. . = 47.9°
Controller Process R(s) G(s) G(s) Y(s) FIGURE 9.69 Block diagram for the Skills Check.
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