Laplace And Fourier Transform objective questions (mcq) and answers

11.  The Fourier transform of a function is equal to its two-sided Laplace transform evaluted

   A. On the real axis of the s-plane

   B. On the line parallel to the real axis of the s-plane

   C. On the imaginary axis of the s-plane

   D. On the line parallel to the imaginary axis of the s-plane

12.  If the Fourier transform of f (t) is F (jω), then what is the Fourier transform of f (-t)?

   A. F (jω)

   B. F (-jω)

   C. -F (jω)

   D. Complex conjugate of F (jω)

13.  The Fourier transform of a unit step function is given as

   A. F (jω) = 1/jω

   B. F (jω) = jω

   C. F (jω) = j/ω

   D. F (jω) = ω/j

14.  Fourier transform δ(t) is given as

   A. Zero

   B. 1

   C. 2Πδ(ω)

   D. Πδ(ω)

15.  The response of an initially relaxed system to a unit ramp excitation is ( t + e^-t ). Its response will be

   A. 1/2 t² - e^-t

   B. 1 - e^-t

   C. e^-t

   D. t

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