(ASU) EEE 203 Signals & Systems I - Midterm Readiness Exam Guide

EEE 203



Signals & Systems I




MIDTERM READINESS EXAM
GUIDE
Q&S




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,1. Multiple Choice: What is the Fourier transform of a
continuous-time rectangular pulse signal?
a) Sinc function
b) Step function
c) Delta function
d) Gaussian function
Correct Answer: a) Sinc function
Rationale: The Fourier transform of a rectangular pulse is
a sinc function, which represents the frequency domain
equivalent of the time domain signal.

2. Fill-in-the-Blank: The Laplace transform of a unit step
function, u(t), is _____.
Correct Answer: 1/s
Rationale: The Laplace transform of a unit step function is
1/s, which is derived from the integral definition of the
Laplace transform.

3. True/False: The z-transform is applicable only for
discrete-time signals.
Correct Answer: True
Rationale: The z-transform is indeed only applicable for
discrete-time signals as it maps the discrete-time signal into
the complex frequency domain.

4. Multiple Response: Which of the following are properties
of the Fourier series? (Select all that apply)
a) Linearity
b) Time shifting
c) Frequency shifting
d) Differentiation
Correct Answers: a) Linearity, b) Time shifting, d)
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, Differentiation
Rationale: The Fourier series has properties of linearity,
time shifting, and differentiation. Frequency shifting is not a
property of the Fourier series but of the Fourier transform.

5. Multiple Choice: In a linear time-invariant (LTI) system, if
the input is a sinusoidal signal, the output will be:
a) A sinusoidal signal of the same frequency
b) A sinusoidal signal of a different frequency
c) A constant signal
d) A ramp signal
Correct Answer: a) A sinusoidal signal of the same
frequency
Rationale: In an LTI system, the frequency of a sinusoidal
input signal is preserved at the output.

6. Fill-in-the-Blank: The impulse response of an LTI system
is its output when the input is a _____.
Correct Answer: delta function
Rationale: The impulse response of an LTI system is
defined as the output when the input is a delta function,
representing the system's response to a unit impulse.

7. True/False: Convolution in the time domain is equivalent
to multiplication in the frequency domain.
Correct Answer: True
Rationale: Convolution in the time domain corresponds to
multiplication in the frequency domain, as per the
convolution theorem.

8. Multiple Response: Which of the following signals are
considered energy signals? (Select all that apply)
a) Unit step signal
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