Question

The simultaneous applications of signals x (t) and y (t) to the horizontal and vertical plates respectively, of an oscilloscope, produce a vertical figure of 8 displays. If P and Q are constants and x(t) = P sin (4t + 30), then y(t) is equal to _________ (a) Q sin (4t – 30) (b) Q sin (2t + 15) (c) Q sin (8t + 60) (d) Q sin (4t + 30) The question was asked by my college director while I was bunking the class. This key question is from Problems Involving Coupling Coefficient topic in chapter 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 (b) Q sin (2t + 15) To explain: \frac{f_y}{f_x} = \frac{x-peak}{y-peak} Here, x-peak = 1 and y-peak = 2 ∴ y(t) = Q sin (2t + 15).