Electronics and Communication Engineering - Automatic Control Systems - Discussion

Discussion Forum : Automatic Control Systems - Section 1 (Q.No. 46)
46.
The system in the given figure, has
good gain and phase margin
poor gain and phase margin
good gain margin but poor phase margin
poor gain margin but good phase margin
Answer: Option
Explanation:

Since the plot is very near (-1 + j0) point, gain margin is poor.

Discussion:
2 comments Page 1 of 1.

Prince said:   7 years ago
If the polar plot is near to (-1, j0) that means it does not have good gain margin.

According to the property of relative gain margin.

Teju said:   10 years ago
How can we know which has good phase margin and good gain margin.

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