8. The advantages of Nyquist stability test is/are :
(a)it guides in stabilising an unstable system (b)it enables to predict closed loop stability from open loop results (c)is is applicable to experimental results of frequency response of open loop system (d)all of the above
Answer
Answer : (d)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Stability Theory » Exercise - 260. The open - loop transfer function of a second-order system is G(s) = 20/(s + 1)(s + 10) (a) 0 dB (b) 20 dB (c) ∞ dB (d) 2 dB
Stability Theory » Exercise - 1 1. The loop transfer function of a feedback control system is given by Number of asymptotes of its root loci is : (a) 1 (b) 2 (c) 3 (d) 4
Stability Theory » Exercise - 145. Because of the addition of a zero to G(s)H(s), the stability of the system is : (a) improved (b) reduced (c) not affected (d) none of these
Stability Theory » Exercise - 147. Because of the addition of pole to G(s)H(s), the stability of the system is : (a) improved (b) reduced (c) not affected (d) none of these
Stability Theory » Exercise - 254. The damping ratio of a second-order system is 0.2. Its phase margin is approximately : (a) 0.4˚ (b) 2˚ (c) 20˚ (d) 40˚