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When a lag compensator is used for the compensation of a system, the magnitude bode plot of thc compensated system : (a) Remains unaltered (b) Always lies below the uncompensated system (c) Always lies above the uncompensated system (d) Remains unaltered upto some low frequency and lics below thc uncompensated system for higher frequencies.?
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Introduction:
In control systems, a lag compensator is often used to improve system performance. It is a type of compensator that allows the system's response to a step input to be improved by increasing the system's phase margin. When a lag compensator is used for the compensation of a system, the magnitude bode plot of the compensated system is affected.

Effect on Magnitude Bode Plot:
The magnitude bode plot of a compensated system is affected by a lag compensator. The following are the possible cases for the magnitude bode plot of the compensated system:

Case 1: Remains Unaltered: In some cases, the magnitude bode plot of the compensated system remains unaltered. This happens when the lag compensator has no effect on the magnitude of the system.

Case 2: Always Lies Below the Uncompensated System: In some cases, the magnitude bode plot of the compensated system always lies below the uncompensated system. This happens when the phase lag introduced by the lag compensator is more than the phase lead introduced by the system.

Case 3: Always Lies Above the Uncompensated System: In some cases, the magnitude bode plot of the compensated system always lies above the uncompensated system. This happens when the phase lag introduced by the lag compensator is less than the phase lead introduced by the system.

Case 4: Remains Unaltered Up to Some Low Frequency and Lies Below the Uncompensated System for Higher Frequencies: In most cases, the magnitude bode plot of the compensated system remains unaltered upto some low frequency and lies below the uncompensated system for higher frequencies. This happens when the phase lag introduced by the lag compensator is less than the phase lead introduced by the system at low frequencies but becomes more than the phase lead introduced by the system at higher frequencies.

Conclusion:
In conclusion, when a lag compensator is used for the compensation of a system, the magnitude bode plot of the compensated system may either remain unaltered or be affected in one of the ways mentioned above. The effect of the lag compensator on the magnitude bode plot depends on the phase lag introduced by the compensator as compared to the phase lead introduced by the system.
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When a lag compensator is used for the compensation of a system, the magnitude bode plot of thc compensated system : (a) Remains unaltered (b) Always lies below the uncompensated system (c) Always lies above the uncompensated system (d) Remains unaltered upto some low frequency and lics below thc uncompensated system for higher frequencies.?
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When a lag compensator is used for the compensation of a system, the magnitude bode plot of thc compensated system : (a) Remains unaltered (b) Always lies below the uncompensated system (c) Always lies above the uncompensated system (d) Remains unaltered upto some low frequency and lics below thc uncompensated system for higher frequencies.? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about When a lag compensator is used for the compensation of a system, the magnitude bode plot of thc compensated system : (a) Remains unaltered (b) Always lies below the uncompensated system (c) Always lies above the uncompensated system (d) Remains unaltered upto some low frequency and lics below thc uncompensated system for higher frequencies.? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When a lag compensator is used for the compensation of a system, the magnitude bode plot of thc compensated system : (a) Remains unaltered (b) Always lies below the uncompensated system (c) Always lies above the uncompensated system (d) Remains unaltered upto some low frequency and lics below thc uncompensated system for higher frequencies.?.
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