AllInfoHub – MCQ Practice

Signals and Systems – Multiple Choice Questions (MCQs)

49. The auto-correlation function of a periodic signal is also:
- A. Periodic
- B. Aperiodic
- C. Constant
- D. Zero
50. The cross-correlation function measures the similarity between two signals as a function of their relative:
- A. Amplitude
- B. Frequency
- C. Time shift
- D. Phase
51. The Fourier Series coefficients of an even periodic signal are:
- A. Purely real
- B. Purely imaginary
- C. Complex
- D. Zero
52. The Fourier Series coefficients of an odd periodic signal are:
- A. Purely real
- B. Purely imaginary
- C. Complex
- D. Zero
53. The region of convergence (ROC) of the Laplace transform is always a strip parallel to the:
- A. Real axis
- B. Imaginary axis
- C. Origin
- D. Infinity
54. The Laplace transform of a derivative df(t)/dt is:
- A. sF(s)
- B. sF(s) - f(0-)
- C. F(s)/s
- D. F(s) + f(0-)
55. The initial value theorem in Laplace Transform is used to find the value of a function as t tends to:
- A. 0
- B. ∞
- C. 1
- D. -1
56. The stability condition for a discrete-time LTI system requires that all poles of H(z) must be:
- A. Outside the unit circle
- B. Inside the unit circle
- C. On the unit circle
- D. At the origin
57. The discrete-time counterpart of convolution is:
- A. Multiplication
- B. Addition
- C. Discrete convolution sum
- D. Discrete convolution integral
58. A system is memoryless if its output depends only on the ________ input.
- A. Past
- B. Present
- C. Future
- D. Past and present
59. The power spectrum of a wide-sense stationary (WSS) random process is the Fourier Transform of its:
- A. Autocorrelation function
- B. Probability density function
- C. Mean
- D. Variance
60. The relationship between phase and group velocity is important for understanding signal propagation in:
- A. Non-dispersive media
- B. Dispersive media
- C. Lossless media
- D. Vacuum

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Signals and Systems – Multiple Choice Questions (MCQs)

49. The auto-correlation function of a periodic signal is also:

50. The cross-correlation function measures the similarity between two signals as a function of their relative:

51. The Fourier Series coefficients of an even periodic signal are:

52. The Fourier Series coefficients of an odd periodic signal are:

53. The region of convergence (ROC) of the Laplace transform is always a strip parallel to the:

54. The Laplace transform of a derivative df(t)/dt is:

55. The initial value theorem in Laplace Transform is used to find the value of a function as t tends to:

56. The stability condition for a discrete-time LTI system requires that all poles of H(z) must be:

57. The discrete-time counterpart of convolution is:

58. A system is memoryless if its output depends only on the ________ input.

59. The power spectrum of a wide-sense stationary (WSS) random process is the Fourier Transform of its:

60. The relationship between phase and group velocity is important for understanding signal propagation in:

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