Question: Consider the unity feedback control system in Figure 7.62 where 10(s + z) L(s) = G(s)G(s) = s(s + 4s +8) Using the root locus

Consider the unity feedback control system in Figure 7.62 where

10(s + z) L(s) = G(s)G(s) = s(s + 4s +8) Using

10(s + z) L(s) = G(s)G(s) = s(s + 4s +8) Using the root locus method, determine that maximum value of z for closed-loop stability. a. z = 7.2 b. z = 12.8 c. Unstable for all z > 0 d. Stable for all z > 0

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