Answer Happy

D Question 20 Consider the following feedback system: R(3) C(s) G(s) C($) where C(s) is a phase-lag compensator When compared with the uncompensated system (that is, C(s) = 1), select the most correct statement on the compensated system: Provides additional attenuation at higher frequencies. Increases the phase margin. O All of them are correct.
D Question 22 Select the correct statement on the following system when r(t) = 1(6) and C(s) = 5: R(S) Y() C(s) 1 Ts + 1 Controller Plant This system has a proportional controller and steady state error is eliminated (e_55-0). None of them are correct This system has a proportional controller and an offset error: e_95-5. This system has a proportional controller and steady state error e_55-1/6. This system has an integral controller and steady state error is eliminated (e_ss-0).