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Which one of the following is a disadvantage of proportional controller?

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Which one of the following is a disadvantage of proportional controller?

(a) It is destabilizes the system

(b) It produces offset

(c) It makes the response faster

(d) It has very simple implementation

The question was asked by my college director while I was bunking the class.

The above asked question is from Design Considerations for Higher-Order Systems topic in portion Time Response Analysis, Design Specifications and Performance Indices of Control Systems

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The correct option is (b) It produces offset

Best explanation: Main disadvantage of proportional controller is produces the permanent error is called offset error.

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