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Electronics and Communication Engineering - Exam Questions Papers - Discussion

Discussion Forum : Exam Questions Papers - Exam Paper 8 (Q.No. 32)
Exam Questions Papers
32.
A system described by the following differential equation is initially at rest. For input x(t) - 2u(t), the output y(t) is :
(1 - 2e-t + e -2t)
(1 + 2e-t - 2e -2t)u(t)
(0.5 + e-t + 1.5e -2t)u(t)
(0.5 + 2e-t + 2e -2t)u(t)
Answer: Option
Explanation:

Taking L.T.

s2y(s) + 3sy(s) + 2y(s) = x(s)

I.L.T = (1 - 2e-t + e-2t)U(t).

Discussion:
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