Question: ( 2 0 % ) Problem 4 : For the Bode plot shown in the figure below: a . Find the Gain Crossing Frequency g

(20%) Problem 4: For the Bode plot shown in the figure below:
a. Find the Gain Crossing Frequency gc and the Phase at the Gain Crossing Frequency |) and show them clearly on the figure below. How much is the Phase Margin m? Determine whether the system is stable or unstable according to the Nyquist stability criterion?
b. Find the Critical Frequency cr and Gain Margin GMdB and show them clearly on the figure below. In order for the system to be critically stable, will you increase or decrease the gain K? Please explain.
( 2 0 % ) Problem 4 : For the Bode plot shown in

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