Electronics and Communication Engineering - Exam Questions Papers - Discussion

Discussion Forum : Exam Questions Papers - Exam Paper 11 (Q.No. 22)
22.
The magnitude plot of a composite signal x(t) = e2jt + e3jt is
Half wave rectified sinusoid
Full wave rectified sinusoid
Exponentially increasing sinusoid
Exponentially decreasing sinusoid
Answer: Option
Explanation:

x(t) = ej2 . 5t (e-j0.5t + e-j0 . 5t)

x(t) = 2ej2.5t cos (0.5)t

The magnitude of x(t) is

|x(t)| = 2|cos (0.5)t|.

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