Suppose the unit step response of a feedback control system is y(t) =(1-e (-2t+1))u(t). if the settling time t, = 4 sec. and P.O > 0%, then answer the following three questions. Q22. The value if a is (a) 2.53 (b) 1.85 (c) 2.46 (d) 1.95 Q23. The value of peak overshoot time t, is (e) 3.25 (f) 2.1 (g) none (a)2.183 sec. (b) 1.183 sec. Q24. The percent peak overshoot is (c) 0.813 (d) 0.5915 sec. Hea) 1.7745 sec. (f) 1.733 (g) none (a) 4.32% (b) 16.32% (c)24.2% (e) 9.52% (1) 17.32% (g) none akc sten feedback control system (d) 32.5% is