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  • Question

  • Inverse Laplace transform of Inverse Laplace transform of is 2 exp (- 2.5 t) cosh (0.5 t) exp (- 2 t) + exp (- 3 t) 2 exp (- 2.5 is


  • Options
  • A. 2 exp (- 2.5 t) cosh (0.5 t)
  • B. exp (- 2 t) + exp (- 3 t)
  • C. 2 exp (- 2.5 t) sinh (0.5 t)
  • D. 2 exp (- 2.5 t) cos 0.5 t

  • Correct Answer
  • exp (- 2 t) + exp (- 3 t) 

    Explanation
    Inverse Laplace transform of is 2 exp (- 2.5 t) cosh (0.5 t) exp (- 2 t) + exp (- 3 t) 2 exp (- 2.5

    f(t) = e-2t + e-3t.

    Signals and Systems problems

    Search Results

    • 1. Which one most appropriate dynamic system?

    • Options
    • A. y(n) + y(n - 1) + y(n + 1)
    • B. y(n) + y(n - 1)
    • C. y(n) = x(n)
    • D. y(n) + y(n - 1) + y(n + 3) = 0
      • Discuss
    • 2. ?(t) is a

    • Options
    • A. energy signal
    • B. power signal
    • C. neither energy nor power
    • D. none
      • Discuss
    • 3. 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
    • 4. 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
    • 5. 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
    • 6. Laplace transform of a pulse function of magnitude E and duration from t = 0 to t = a is

    • Options
    • A. E / s
    • B.
    • C.
    • D.
      • Discuss
    • 7. The z-transform of a particular signal is given
      where

      The system after implementation will be

    • Options
    • A. casual and stable
    • B. non-casual and stable
    • C. non-casual and unstable
    • D. casual and unstable
      • Discuss
    • 8. The final value theorem is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 9. Which one is a causal system?

    • Options
    • A. y(n) = 3x[n] - 2x[n - 1]
    • B. y(n) = 3x[n] + 2x[n + 1]
    • C. y(n) = 3x[n + 1] + 2x[n - 1]
    • D. y(n) = 3x[n + 1] 2x[n - 1] + x[n]
      • Discuss
    • 10. A signal g(t) = A then g(t) is a

    • Options
    • A. energy signal
    • B. power signal
    • C. neither energy nor power signal
    • D. insufficient data
      • Discuss

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