Which of the following indicates a stable system in the context of Bode plots?

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Question: Which of the following indicates a stable system in the context of Bode plots?

Options:

Correct Answer: The phase margin is positive.

Solution:

A positive phase margin indicates that the system is stable, as it shows how much phase shift can be tolerated before instability occurs.

Which of the following indicates a stable system in the context of Bode plots?

Which of the following indicates a stable system in the context of Bode plots?

Step 1: Understand what a Bode plot is. It is a graph that shows how a system responds to different frequencies.
Step 2: Identify the two main components of a Bode plot: the magnitude plot and the phase plot.
Step 3: Focus on the phase plot, which shows the phase shift of the system at different frequencies.
Step 4: Learn about phase margin. It is the difference between the phase of the system at the gain crossover frequency and -180 degrees.
Step 5: Recognize that a positive phase margin means the system can tolerate some additional phase shift before becoming unstable.
Step 6: Conclude that if the phase margin is positive, the system is stable.

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