Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
ECE 4501
Power Systems Laboratory Manual
Rev 1.0
5.0 DC MOTORS
5.1
5.1.1
DC SHUNT MOTOR
OBJECTIVE
To study the torque vs. speed characteristic of a shunt wound DC motor and calculate its
efficiency.
5.1.2
DISCUSSION
The speed of any DC motor depends direc
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
ECE323L ACTIVITY 2 ILLUSTRATIVE PROBLEM
1. Given the signal x(t) shown as
(a) Determine the mathematical expression for x(t)
x(t)= 0,
t < 8
= 4,
8 t < 5
= 4 + 6sin(0.25t + 1.25), 5 t < 1
= 4,
1 t < 2
= 6t,
2t 6
= 0,
6t
(b) Determine the energy cont
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
ROOTS OF EQUATIONS:
APPLICATIONS IN THE FIELD
OF ELECTRONICS
BY:
ENGR MARVIN COLUMBINO
ENGR. JANRY GARCIA
PROBLEM:
In a certain telecommunications company, customers
from the Philippines complain that they cannot
establish telephone calls to Hong Kong. Ho
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
United Arab Emirates University
College of Engineering &
College of Science
Math 2220: Linear Algebra and
Engineering Applications
Spring 2009
Prepared by: Dr. Mousa Hussein
2/22/2009
ENGINEERING APPLICATIONS OF SYSTEMS OF LINEAR
EQUATIONS
Many real life
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
SYSTEMS OF LINEAR EQUATIONS: GLOBAL POSITIONING
APPLICATION IN THE FIELD OF ELECTRONICS ENGINEERING
SYSTEM
AS
AN
The idea of locating ones position on the surface of the planet goes back deep in
human history. Ancient civilizations like the Greek, Persian
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
OPTIMIZATION:
APPLICATIONS IN THE FIELD
OF ELECTRONICS
BY:
ENGR. JANRY V. GARCIA
SIGNAL TO NOISE RATIO
the ratio of the strength of an electrical or
other signal carrying information to that
of interference, generally expressed in
decibels.
SIGNAL TO NOIS
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
ROOTS OF EQUATIONS: APPLICATIONS IN THE FIELD OF ELECTRONICS
Nowadays, communications play significant role in our lives as we are continuously conveying
information from one place to another. For communication to be possible, one must have a source of
in
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
ROOTS OF EQUATIONS: APPLICATIONS IN THE FIELD OF ELECTRONICS
Nowadays, communications play significant role in our lives as we are continuously conveying information from one place to another.
For communication to be possible, one must have a source of in
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
Meng ECE D513: Advance Electromagnetics
Problem Set 1
Instructions:
1. The problem set is to be solved by group with each group having three to four members. You have to
form your groups. The purpose for the grouping is to encourage exchange of ideas and
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
Name1
Name2
Name 3
ECE323EL
1:30 4:30 MWF
ACTIVITY NO. 1
MATHEMATICAL MODELS FOR
BASIC SIGNALS
1. Given the signal x(t) shown as
(a) Determine the mathematical expression for x(t)
x(t)= _0_,
t < 5
= _4t+20_ _, 5 t < 4
= _4_, 4 t < 2
= _ _4+6sin(0.25t
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
Name1
Name2
Name 3
ECE323EL
1:30 4:30 MWF
ACTIVITY NO. 5
FOURIER TRANSFORMS
Date Performed:
December 25, 2013
Date Submitted:
December 25, 2014
1. Given the rectangular pulse x(t) shown as
(a) Plot the x(t) using SCILAB for 10ms t 10ms. (Use 0.00001sec s
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
Name1
Name2
Name 3
ECE323EL
1:30 4:30 MWF
ACTIVITY NO. 3
PROPERTIES OF PERIODIC
SIGNALS
Date Performed:
December 25, 2013
Date Submitted:
December 25, 2014
1. Given the periodic signal x(t) shown for 1 cycle as
(a) Determine the mathematical expression fo
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
ECE323L ACTIVITY 5 ILLUSTRATIVE PROBLEM
1. Given the signal x(t) shown as
(a) Determine the mathematical expression for x(t)
x(t)= 0,
t < 0.1
= 100 + 1000t,
0.1 t < 0
= 100  1000t,
0 t 0.1
= 0,
0.1 < t
(b) Compute the Fourier transform X(w) of x(t) for
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
ACTIVITY 4 ILLUSTRATIVE PROBLEM
1. Given the periodic signal x(t) shown for 1 cycle as
(a) Define x(t) for 0tTo, where To is the fundamental period.
To=7 seconds
x(t) = 10  2.5t,
0t<4
= 10sin(/6)t(2/3),
4t7
(b) Plot the graph of x(t) for 10t10.
(c) Exp
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
ECE323L ACTIVITY 1 ILLUSTRATIVE PROBLEM
1. Given the signal x(t) shown as
(a) Determine the mathematical expression for x(t)
x(t) = 0,
t < 8
= 4,
8 t < 5
= 4 + 6sin(0.25t + 1.25),
5 t < 1
= 4,
1 t < 2
= 6t,
2t 6
= 0,
6t
(b) Plot the graph for x(t)
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
ACTIVITY 6 ILLUSTRATIVE PROBLEM
1. Given the circuit shown as
(a) Determine the transfer function H(s) of the circuit.
Vo
0.5
H(s) =  = Vi
s + 0.625
(b) Determine the impulse response h(t) of the circuit.
0.625t
h(t) = 0,625e
u(t)
(c) Plot the impulse
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
ACTIVITY 3 ILLUSTRATIVE PROBLEM
1. Given the periodic signal x(t) shown for 1 cycle as
(a) Define x(t) for 0tTo, where To is the fundamental period.
To=7 seconds
x(t) = 10  2.5t,
0t<4
= 10sin(/6)t(2/3),
4t7
(b) Plot the graph of x(t) for 10t10.
(b) Det
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
Name1
Name2
Name 3
ECE323EL
1:30 4:30 MWF
ACTIVITY NO. 2
SYMMETRY AND ENERGY
CONTENT OF SIGNALS
Date Performed:
December 25, 2013
Date Submitted:
December 25, 2014
1. Given the signal x(t) shown as
(a) Determine the normalized energy content Ex of the sig
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
Name1
Name2
Name 3
ECE323EL
1:30 4:30 MWF
ACTIVITY NO. 4
FOURIER SERIES
Date Performed:
December 25, 2013
Date Submitted:
December 25, 2014
1. Given the periodic signal x(t) shown for 1 cycle as
(a) Determine the mathematical expression for x(t) for 0 t T
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
Meng ECE D513: Advance Electromagnetics
Problem Set 2
Instructions:
1. The problem set is to be solved by group with each group having three members. You have to
form your groups. The purpose for the grouping is to encourage exchange of ideas and collabor
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
Sunset
by Paz Latorena
The Man
She came to him out of the rain like a rabbit of flotsam washed from the distant seas to the
shore by uncertain tides. The wind blew from the east that night and as the door of the
rustly shop opened westward, it slammed shu
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
Magnetostriction
Magnetostriction (cf. electrostriction) is a property of ferromagnetic materials that causes them to change their shape or
dimensions during the process of magnetization. The variation of materials' magnetization due to the applied magnet
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
Death In A Sawmill
By Rony V. Diaz
You can cleave a rock with it. It is the iron trith. That was not an accident. That was a
murder. Yes, a murder. That impotent bastard, Rustico, murderd Rey.
You have seen the chain that holds logs on a carriage in place
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
DEVELOPMENT OF PROFICIENCY IN ORAL EXPRESSION AND COMPREHENSION IN
PUPILS WITH LEARNING DISABILITY
Learning difficulty refers to a disorder in which a one person undergoes difficulty in
learning through a symbolic manner and is actually caused by an unkno
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
BACKGROUND OF THE STUDY
Learning difficulty refers to a disorder in which a one person undergoes difficulty in
learning through a symbolic manner and is actually caused by an unknown factor. The
disorder that basically affect the basic function through br
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
1.
SoftWear Silhouettes is a rapidly growing mailorder house specializing in allcotton clothing.
Management would like to expand sales to the Web with the creation of an ecommerce site. The
company has two fulltime system analysts and one programmer. C
Saint Louis University, Baguio City Main Campus  Bonifacio St., Baguio City
Electronics
ENGINEERIN 2125366

Spring 2016
1.
SoftWear Silhouettes is a rapidly growing mailorder house specializing in allcotton clothing.
Management would like to expand sales to the Web with the creation of an ecommerce site. The
company has two fulltime system analysts and one programmer. C