Question

Find the resonant frequency in the ideal parallel LC circuit shown in the figure. (a) 7.118 (b) 71.18 (c) 711.8 (d) 7118 The question was posed to me by my school principal while I was bunking the class. This interesting question is from Parallel Resonance topic in division Resonance & Magnetically Coupled Circuit 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

Correct choice is (d) 7118 For explanation I would say: The expression for resonant frequency is fr = 1/(2π√LC). Given L = 50mH and C = 0.01uF. On substituting the given values in the equation we get the resonant frequency = 1/(2π√(50×10^-3)×0.01×10^-6))=7117.6 Hz.