AllInfoHub – MCQ Practice

Signals and Systems – Multiple Choice Questions (MCQs)

73. A system with memory is characterized by its output depending on:
- A. Present input only
- B. Future input only
- C. Past inputs
- D. Past and present inputs
74. An FIR filter is a system whose impulse response is of:
- A. Infinite duration
- B. Finite duration
- C. Zero duration
- D. Continuous duration
75. An IIR filter is a system whose impulse response is of:
- A. Infinite duration
- B. Finite duration
- C. Zero duration
- D. Continuous duration
76. The relationship between phase and group velocity becomes identical for:
- A. Dispersive media
- B. Non-dispersive media
- C. Lossless media
- D. Vacuum
77. The unit ramp function r(t) is the integral of the:
- A. Unit impulse function
- B. Unit step function
- C. Exponential function
- D. Sine function
78. The derivative of the unit step function u(t) is the:
- A. Unit impulse function
- B. Unit ramp function
- C. Rectangular pulse
- D. Exponential function
79. A system with feedback is typically:
- A. Open-loop
- B. Closed-loop
- C. Linear
- D. Non-linear
80. A system without feedback is typically:
- A. Open-loop
- B. Closed-loop
- C. Linear
- D. Non-linear
81. The total energy of a signal can be obtained by integrating its ________ over all frequencies.
- A. Magnitude spectrum
- B. Phase spectrum
- C. Power spectrum
- D. Energy spectral density
82. The power spectral density (PSD) of a signal is the Fourier Transform of its:
- A. Autocorrelation function
- B. Cross-correlation function
- C. Probability density function
- D. Mean
83. The ROC of the Z-transform for an anti-causal sequence is typically:
- A. Inside the unit circle
- B. Outside the unit circle
- C. An annulus
- D. The entire z-plane
84. Which property of the Fourier Transform allows breaking down a complex signal into simpler sinusoidal components?
- A. Linearity
- B. Time-invariance
- C. Frequency shifting
- D. Superposition

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Signals and Systems – Multiple Choice Questions (MCQs)

73. A system with memory is characterized by its output depending on:

74. An FIR filter is a system whose impulse response is of:

75. An IIR filter is a system whose impulse response is of:

76. The relationship between phase and group velocity becomes identical for:

77. The unit ramp function r(t) is the integral of the:

78. The derivative of the unit step function u(t) is the:

79. A system with feedback is typically:

80. A system without feedback is typically:

81. The total energy of a signal can be obtained by integrating its ________ over all frequencies.

82. The power spectral density (PSD) of a signal is the Fourier Transform of its:

83. The ROC of the Z-transform for an anti-causal sequence is typically:

84. Which property of the Fourier Transform allows breaking down a complex signal into simpler sinusoidal components?

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