Stability Theory – 37

37. Marginally stable system have some roots with real parts equal to zero, then the system is :

(a) positive real parts
(b) negative real parts
(c) zero real parts
(d) none of these

Answer

Answer : (a)

Explanation

Explanation : No answer description available for this question. Let us discuss.

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Stability Theory - 32
Stability Theory » Exercise - 132. If all the roots of the characteristic equation have negative real parts, then the system is : (a) stable (b) unstable (c) conditionally stable (d) marginally stable
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Stability Theory » Exercise - 123. Asymptotes can intersect : (a) only on the negative real axis (b) only on the positive real axis (c) any where on the real axis (d) none of these
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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˚
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Stability Theory - 64
Stability Theory » Exercise - 264. The Nyquist plot inter the real axis at –a = -2, the gain margin is : (a) 2 (b) 1/2 (c) -2 (d) cannot be estimated
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Stability Theory - 62
Stability Theory » Exercise - 262. The Nyquist plot intersects the real axis at –a = -0.02, the gain margin is : (a) -0.02 (b) +0.02 (c) 50 (d) cannot be estimated
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