Question

In which of the filter circuits given below, will the bandwidth be equal to the critical frequency? (a) Low-pass (b) High-pass (c) Band-pass (d) Band-stop The question was posed to me during a job interview. My doubt is from Advanced Problems on Filters in chapter Filters and Attenuators of Network Theory Select the correct answer from above options network theory questions and answers, network theory questions pdf, network theory question bank, network theory gate questions and answers pdf, mcq on network theory pdf, gate network theory questions and solutions, network theory mcq Test , ies network theory questions, Network theory Questions for GATE EC Exam, Network Theory MCQ (Multiple Choice Questions)

Answer 1

Right answer is (a) Low-pass The best explanation: Bandwidth can be calculated by considering, Largest positive value – Smallest Positive Value Here, in case of the Low-pass filter only, the largest positive value will of course be the critical frequency, beyond which frequencies have to be blocked. Hence, the bandwidth in a Low-pass filter equals the critical frequency.