engineering recuitment NIELIT Scientific Assistant Mock Test 2025 Control Systems Stability Analysis Routh-Hurwitz Stability Criteria
Consider a unity negative feedback control system, here \(\rm G(s) = \frac{1}{(s + 1)}\) and \(\rm H(s) = \frac{K}{s(s + 2)}\) The closed loop system is stable for
1
K > 20
2
15 < K < 20
3
8 ≤ K ≤ 14
4
K < 6