Electronics and Communication Engineering - Automatic Control Systems - Discussion

Discussion Forum : Automatic Control Systems - Section 2 (Q.No. 10)
10.
The polar plot of a transfer function passes through (-1, 0) point. The gain margin is
zero
- 1 dB
1 dB
infinity
Answer: Option
Explanation:

When polar plot passes through (-1, 0) the system is on limit of stability and gain margin is zero.

Discussion:
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