Electronics and Communication Engineering - Exam Questions Papers - Discussion

Discussion Forum : Exam Questions Papers - Exam Paper 8 (Q.No. 10)
10.
The magnitude plot of a composite signal x(t) = e3jt + e4jt is __________ .
Half wave rectified sinusoid
Full wave rectified sinusoid
Exponentially increasing sinusoid
Exponentially decreasing sinusoid
Answer: Option
Explanation:

x(t) = ej3.5t(e-j05t + ej0.5t)

x(t) = 2ej3.5t cos(0.5)t

The magnitude of x(t) is |x(t)| = 2|cos(0.5)t|.

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