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  • Question

  • If the power spectral density of stationary random process is a sine-squared function of frequency, the shape of its autocorrelation is


  • Options
  • A. If the power spectral density of stationary random process is a sine-squared function of frequency,
  • B. If the power spectral density of stationary random process is a sine-squared function of frequency,
  • C. If the power spectral density of stationary random process is a sine-squared function of frequency,
  • D. If the power spectral density of stationary random process is a sine-squared function of frequency,

  • Correct Answer
  •  

    Explanation
    Since autocorrelation function and power spectral density bears a Fourier transform relation, then since required in frequency domain will five rectangular convolutions in time domain thus it is triangular function.

    More questions

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    • Options
    • A. True
    • B. False
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    • Options
    • A. True
    • B. False
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    • 3. Slotted line can be used for measurement of high frequencies

    • Options
    • A. True
    • B. False
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    • 4. A line of length slightly less than and short circuited at far end behaves as

    • Options
    • A. inductance L
    • B. capacitance C
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    • D. L and C in parallel
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    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Assertion (A): For a solenoid having N turns, .

      Reason (R): For all magnetic materials, B increases linearly with I.


    • Options
    • A. Both A and R are true and R is correct explanation of A
    • B. Both A and R are true but R is not correct explanation of A
    • C. A is true but R is false
    • D. A is false but R is true
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    • 7. A ring counter with 5 flip flops will have

    • Options
    • A. 5 states
    • B. 10 states
    • C. 32 states
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      • Discuss
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    • Options
    • A. 0.9
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    • C. 0.81
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    • Options
    • A. is decreased
    • B. is increased
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      • Discuss
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    • Options
    • A. 1 each
    • B. 0.5 each
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    • D. 1 and 0.5 respectively
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