GATE ECE 2018 | Question: 5

Question

The Nyquist stability criterion and the Routh criterion both are powerful analysis tools for determining the stability od feedback controllers. Identify which of the following statements is FALSE:

• A. Both the criteria provide information relative to the stable gain range of the system.
• B. The general shape of the Nyquist plot is readily obtained from the Bode magnitude plot for all minimum-phase systems.
• C. The Routh criterion is not applicable in the condition of transport lag, which can be readily handled by the Nyquist criterion.
• D. The closed-loop frequency response for a unity feedback system cannot be obtained from the Nyquist plot.

Answer 1

Ans B,why ans is D since that statement is true and asked in question false statement