The characteristic equation of a certain feedback control system is given by s4 + 4s3 + 13s2 + 36s + k = 0. The range of values of k for which the feedback system is stable, is given by:
A. 0 < k < 4
B. 4 < k < 36
C. 0 < k < 36
D. 13 < k < 36
Answer: Option C
This Question Belongs to Electronics And Communications Engineering >> Control Systems
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