Electronics and Communication Engineering - Automatic Control Systems - Discussion
Discussion Forum : Automatic Control Systems - Section 2 (Q.No. 19)
19.
If phase angle of open loop transfer function becomes - 180° at frequency ω1, then gain margin is equal to
|G(jω1)|
1 + |G(jω1)|
Answer: Option
Explanation:
If gain is a, gain margin is 
. In this case gain is |G(jω1)|.
Discussion:
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