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
Stability Theory » Exercise - 12. A unity feedback system has In the root-locus, the break-away point occurs between : (a) s = 0 and -1 (b) s = -1 and -∞ (c) s = -1 and -2 (d) s = -2 and -∞
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˚
Stability Theory » Exercise - 253. The phase margin of a system is 40˚. The damping ratio of the system ξ is approximately : (a) 0.04 (b) 0.4 (c) 4 (d) cannot be estimated