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What is/are the disadvantages of the Nyquist plot?

137. What is/are the disadvantages of the Nyquist plot?

1. Mathematical techniques are used in it.
2. System stability cannot be determined by it.
3. On the right side of the s-plane, it does not provide the exact number of poles.
4. All of the above

Answer: D) All of the above

Explanation:

The disadvantages of the Nyquist plot are -

1. Mathematical techniques are used in it.
2. System stability cannot be determined by it.
3. On the right side of the s-plane, it does not provide the exact number of poles.