Discussion :: Exam Questions Paper
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The magnitude plot of a composite signal x(t) = e3jt + e4jt is __________ .
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A.
Half wave rectified sinusoid
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B.
Full wave rectified sinusoid
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C.
Exponentially increasing sinusoid
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D.
Exponentially decreasing sinusoid
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Answer : Option B
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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