1.

Find the function f (t) in terms of unit step function in the graph shown below.(a) 4t [u (t) – u (t + 5)](b) 4t [u (t) + u (t + 5)](c) 4t [u (t) – u (t – 5)](d) 4t [u (t) + u (t – 5)]I had been asked this question in quiz.This key question is from Definition of the Laplace Transform in section Intoduction to the Laplace Transform of Network Theory

Answer»

The CORRECT answer is (c) 4t [U (t) – u (t – 5)]

Easy explanation: The WAVEFORM shown in the figure starts at t = 0 and ends at t = 5 sec. In terms of unit step function the waveform can be expressed as f (t) = 4t [u (t) – u (t – 5)].



Discussion

No Comment Found

Related InterviewSolutions