Grading Summary
These are the automatically
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computed results of your exam.
Time Spent:
Grades for essay questions, and
comments from your instructor, are Points Received:
in the "Details" section below.
Question Type:
Multiple Choice
1/25/2015

Question 3 Question :
.
(TCO 6) The transfer function (TF) of a system is given below. Find its
impulse response in n domain. Hint: First multiply the TF by the ztransform of inputor x(z)or the z-transform of unit impulse. Factor the
denominator and then

Question 1. 1. (TCO 4) A system samples a sinusoid of frequency 1,100 Hz at a rate of 100 Hz and
writes the sampled signal to its output without further modification. Determine the frequency that the
sampling system will generate in its output. (Points :

ECET345 Signals and Systems
Homework #5
Name of Student: William Anaya
1. Using z-transform tables (page 776 of text or equivalent), find the z-transform of
(a)
0.1
( n)u ( n )(0.5n1 ) u ( n1 )
x ( n )=2
x(z) = 2*z/(z-0.1) - z^-1*(z/(z+0.5)
x(z) = 2z/(z-

ECET345
Signals and Systems
LAB # 4
System Analysis
Given the following RC circuit with R = 15kOhm and C= 1600pf, find:
1) An expression for
Vo ()
Vi()
2) The B and A vectors (coefficients).
3) The cutoff frequency
4) Plot the frequency response (both the

1. Question :
(TCO 5) Find the z-transform, x(z), given
Student Answer:
Instructor Explanation:
Points Received:
Question 2 Question :
.
Week 5 Lecture and homework
0 of 5
(TCO 5) Find the inverse z-transform of
value for n = 2.
Student Answer:
-0.6875
-1

ECET345
Signals and Systems
LAB # 5
1) Constructing the Pole-Zero Plot of a Transfer Function
Use MATLAB to construct a pole-zero plot for the following transfer functions:
(Make three all three plots are displayed in one graph)
H1(z) = 2.898 z2 1.449 z
z

345 quiz 1
100%
Question 1. 1. (TCO 1) A signal that is a function of time has the following properties (or the following
applies to it). (Points : 4)
It must always be electrical in nature.
It can be either analog or discrete (sampled).
It must always be

Week 2 : The Laplace Transform Applied to
Linear Time Invariant Systems - Quiz
100%
Question 1. 1. (TCO 2) An RLC circuit is shown below. Determine the impedance between the two
terminals of the circuit and express it as a ratio of two polynomials in S
wi

ECET345 Signals and Systems
Home Work #3
Name of Student _Arturo Vargas_
1. The transfer function of a circuit is given by
H ( s )=
2 s+ 4
4 s2 +2 s +2
.
a. Express the transfer function in a form in which the coefficients of the highest power of s are
un

ECET345
Lab3
Impulse response, stability and Pole-Zero plots
For each of the following transfer functions (systems), find
a) The roots of each of the following systems
b) The impulse response of each of the following systems
c) The pole zero plot of each

ECET345 Signals and Systems
Homework #2
Name of Student _Arturo Vargas _
1. Redraw the following schematics with the impedance of each of the element shown in
Laplace domain. Then determine the overall impedance of the entire circuit between the
two ends

ECET345 Signals and Systems
Homework #4
Name of Student _Arturo Vargas
1. A shiny metal disk with a dark spot on it, as shown in figure below, is rotating clockwise at 100
revolutions/second in a dark room. A human observer uses a strobe that flashes 99
t

Course Number: ECET345
Professor: Saeed Jellouli
Laboratory Number: 2
Laboratory Title: MATLAB Exercises
Submittal Date:
Part I:
Given the following time functions:
a) x1=sin(2t)
b) x2=3t + 2e3t
c) x3=5-3t + 4sin(2t)- 6e4t
Find the Laplace transform:
1) W

ECET345
Signals and Systems
LAB # 2
Part I:
Given the following time functions:
a) x1=sin(2t)
b) x2=3t + 2e3t
c) x3=5-3t + 4sin(2t)- 6e4t
Find the Laplace transform:
1) Work the problems by hand. Take advantage of the fact that Laplace transform is linear