Answer Happy

Figure shows the P Z plot of 4 different systems (12.5 pts] a. Which of the systems are stable, unstable, and marginally stable? Why? b. Which of the systems will have oscillatory and non-oscillatory unit step response? Why? c. For each system, next to the P-Z plot, draw a rough sketch of the unit step response. Assume all systems have DC gain = 0.5. Pole-Zero Map v X G1 X ! الها 3 -1 0 2 -2 Real Axis (seconds) Pole-Zero Map 2 X G2 4 -3 1 2 Imaginary Axis (seconds'' Imaginary Axis (seconds) Imaginary Axis (seconds!) Imaginary Axis (seconds) -2 0 Real Axls (seconds) Pole-Zero Map X 2 0 G3 x 4 -3 1 2 2 0 Real Axis (seconds) Pole Zero Map 2 х X X G 2 -2 0 2 Real Axis (seconds) Figure 1 Pole zero map