Exam Questions Paper - ECE Questions and Answers

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The signal x(t) is described by Two of the angular frequencies at which its fourier transform becomes zero are

p, 2p

0.5p, 1.5p

0, p

2p, 2.5p

Answer : Option A

Explanation :

X(jω) = 1.e^-jωt =

At ω = 0 X(j0) = 2

At ω = p X(jp) = 0

ω = 2p X(j2p) = 0

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