logo

CuriousTab

CuriousTab

Discussion

Home ‣ Electronics and Communication Engineering ‣ Signals and Systems Comments
  • Question

  • Inverse Fourier transform of sgn (?) is


  • Options
  • A. Inverse Fourier transform of sgn (?) is 1 U(t) By duality Property.
  • B. 1
  • C. U(t)
  • D. Inverse Fourier transform of sgn (?) is 1 U(t) By duality Property.

  • Correct Answer
  •  

    Explanation
    By duality Property.

    Signals and Systems problems

    Search Results

    • 1. If is the Laplace transform of f(t) then f(0+) is

    • Options
    • A. 0
    • B.
    • C. 27
    • D. ?
      • Discuss
    • 2. In the given figure the ratio T/d is the duty factor.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. For the discrete time system of the given figure

    • Options
    • A. yk - 0.5 yk - 1 - 0.25 yk - 2 = uk
    • B. yk + 0.5 yk - 1 - 0.25 yk - 2 = uk
    • C. yk - 0.5 yk - 1 + 0.25 yk - 2 = uk
    • D. yk + 0.5 yk - 1 + 0.25 yk - 2 = uk
      • Discuss
    • 4. Z transform is a non-linear operation.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. The period of the function cos is

    • Options
    • A.
    • B. 8s
    • C. 4s
    • D.
      • Discuss
    • 6. If I (s) , initial value of i(t) is

    • Options
    • A. 5A
    • B. 12.5 A
    • C. 0.05 A
    • D. 1250 A
      • Discuss
    • 7. The analog signal given below is sampled by 600 samples per second for m(t) = 3 sin 500 pt + 2 sin 700 pt then folding frequency is

    • Options
    • A. 500 Hz
    • B. 700 Hz
    • C. 300 Hz
    • D. 1400 Hz
      • Discuss
    • 8. If f(t) = A d(t - a), F(s) is

    • Options
    • A. A e-as
    • B. A eas
    • C. A a e-as
    • D. Aa eas
      • Discuss
    • 9. If then for this to be true x(t) is

    • Options
    • A. exp (j2p f/t)
    • B. exp (-j2p f/t)
    • C. exp (j2p ft)
    • D. exp (-j2p f/t)
      • Discuss
    • 10. A voltage V(t) is a Gaussian ergodic random process with a mean of zero and a variance of 4 volt2. If it is measured by a dc meter. The reading will be

    • Options
    • A. 0
    • B. 4
    • C. 2
    • D. 2
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.