Transfer function of two compensators are: C1 = 100(S + 3)/(S + 200), C2 = (S + 200)/(100(S + 3)). Which of the following statement is correct?
- A. C1 - lead and C2 - lag
- B. C1 - lag and C2 - lead
- C. Both C1 and C2 are lag
- D. Both C1 and C2 are lead
Answer: A. C1 - lead and C2 - lag
Explanation: C1 has zero at −3 and pole at −200 (zero closer to origin than pole): phase lead; C2 has pole at −3 and zero at −200: phase lag.