Question

With regard to the filtering capacity the lead compensator and lag compensator are respectively:

(a) Low pass and high pass filter

(b) High pass and low pass filter

(c) Both high pass filter

(d) Both low pass filters

I have been asked this question in unit test.

I want to ask this question from Realization of Basic Compensators topic in division Design of Control Systems

Answer 1

The correct answer is (b) High pass and low pass filter

For explanation: Lead compensator is similar to high pass filter which allows only the high frequencies to pass and rejects all the other and Lag compensator is similar to Low pass filter which allows only low frequencies to pass and rejects other.