Question: Consider the following statements for a counter clockwise Nyquist path. 1. For a stable closed loop system, the Nyquist plot of (mathrm{G}(s) mathrm{H}(s)) should encircle
Consider the following statements for a counter clockwise Nyquist path.
1. For a stable closed loop system, the Nyquist plot of \(\mathrm{G}(s) \mathrm{H}(s)\) should encircle \((-1, j 0)\) point as many times as there are poles of \(\mathrm{G}(s) \mathrm{H}(s)\) in the right half of the \(s\) plane, the encirclements, if there are any must be made in the counter clockwise direction.
2. If the loop gain function \(\mathrm{G}(s) \mathrm{H}(\mathrm{s})\) is a stable function, the closed loop system is always stable.
3. If the loop gain function \(\mathrm{G}(s) \mathrm{H}(s)\) is a stable function, for a stable closed-loop system, the Nyquist plot of \(\mathrm{G}(s) \mathrm{H}(s)\) must not enclose the critical point ( \(-1, j 0\) ).
Which of the statements given above is/are correct?
(a) Only 1
(b) 1 and 2
(c) 1 and 3
(d) Only 3
Step by Step Solution
3.51 Rating (158 Votes )
There are 3 Steps involved in it
The correct answer to this question is c 1 and 3 Heres why Statement 1 This is basically a statement ... View full answer
Get step-by-step solutions from verified subject matter experts
