1.

The characteristic equation of a control system is given as s4 + 4s3 + 4s2 + 3s + K = 0.What is the value of K for which this system is marginally stable?

A. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/9-04-55-1.png">
B. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/9-04-55-2.png">
C. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/9-04-55-3.png">
D. <img src="/_files/images/electronics-and-communication-engineering/exam-question-papers/9-04-55-4.png">
Answer» E.


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