Stability Theory » Exercise - 255. A polar plot crosses the real axis at (-1 + j0) point. The gain margin of the system is : (a) -1˚ (b) 0˚ (c) -180˚ (d) +180˚
Tags: stability, theory, exercise, polar, plot, real, axis, point, margin, system
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
Tags: stability, theory, exercise, polar, plot, point, system, electronics, engineering
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
Stability Theory » Exercise - 267. A polar plot interscets the unit circle at (-1 = j0). The gain margin of the system is : (a) -1 dB (b) 0 dB (c) ∞ dB (d) 2 dB