Topic: Control Systems
A system has fourteen poles and two zeros. Its high frequency asymptote in its magnitude plot having a slope of
- A. -40 dB/decade
- B. -240 dB/decade
- C. -280 dB/decade
- D. -320 dB/decade
Answer: B. -240 dB/decade
Explanation: Each pole contributes a slope of -20 dB/decade and each zero contributes +20 dB/decade.
Total slope = $20 \times (\text{Number of zeros} - \text{Number of poles}) = 20 \times (2 - 14) = -240~\text{dB/decade}$.