Stability Theory » Exercise – 1
6. The characteristic equation 1 + G(s) R(s) = 0 of a system is given by
For the system to remain stable, the value of gain K should be :
(a) zero
(b) greater than zero but less than 10
(c) greater than 10 but less than 20
(d) greater than 20 but less than 30
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