Stability Theory » Exercise - 148. A point lying inside the closed contour is said to be : (a) enclosed by it (b) encircled by it (c) closed by it (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 - 268. As the polar plot gets closer to the (-1 + j0) point, the stability of the system is : (a) improved (b) reduced (c) not affected (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˚