ANSWER FOR QUESTIONS C AND D USING MATHLAB.

 
 
 
 

The AVR system block diagram is shown in Figure 1. The system's parameters are shown in Table 1. Vref (S) Ve(s) Parameters Amplifier Exciter Generator Sensor KA 1+TAS Amplifier Table 1: Nomenclatures Gain KE = 1 KG = 1 KR = 1 VR(S) KE 1+TES Exciter KR 1+ TRS Time constant TA = 0.2 TE = 0.3 TG = 1.0 TR = 0.05 VF (S) KG 1+ TGS Generator Sensor Figure 1: A simplified automatic voltage regulator block diagram V,(s)