ENEL515 Electrical Principles A
Professor Peter Chong
Department of Electrical and Electronic Engineering
Office: WZ 1202
Phone: 09 921 9999 ext 6132
Email: peter.chong@aut.ac.nz
Consultation Time: Monday 1pm to 4pm
Chapter 1 – Introduction to EEE
(Electrical and Electronic Engineering)
Professor Peter Chong - Department of EEE, AUT
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Lecture Time Table
Time
Tue 4pm to 5pm
Wed 5pm to 6pm
Thurs 11am to 12pm
Fri 3pm to 4pm
Location
Online
Online
Online
Online
Professor Peter Chong - Department of EEE, AUT
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Lecturers
• Week 1 to Week 6
• Prof. Peter Chong
– Email: peter.chong@aut.ac.nz
– Office: WZ 1203
• Week 7 to Week 11
• Mr. Michael Hadrup
– Email: michael.hadrup@aut.ac.nz
– Office: WZ 1017
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Recommended text book
• University Physics by Young and Feedman
– Young H.D. and Freedman R.A., University
Physics, 12th ed. Addison-Wesley, USA (2010)
• This book need not be bought.
• Multiple copies of this textbook are held in
the high demand collection for 2-hour loan.
• The library also holds hundreds of other
electrical engineering books, including more
than 300 e-books.
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What to Learn from this course
• This course is designed to give an introduction to
the materials which all electrical/mechanical/built
environment/software engineers require.
• Fundamental principles of Electrical engineering
• Principles, theories and problems of
– Electrostatics
– Electromagnetics
– Electric circuits
Professor Peter Chong - Department of EEE, AUT
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To be covered
• Coulombs Law
• Gauss Law
• Ohms law
• Kirchhoffs Law
• Faradays Law
• Amperes Law
• Mutual inductance
• Magnetic circuits
• Circuits
• Transformer
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Study Guideline
• The lecture notes will be a good guide to the
material throughout the course.
• Attending the lecture is necessary to pass this
paper.
• Problems discussed during the tutorial will be
really helpful for your final examination.
• Most of the work in understanding this course
must be done by students in their own time
• Try out many problems is the only way of finding
out to see if you really understand the material.
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Assessment
Assessment
Weighting (%)
Course work
80%
Lab
Assignment 1
(take-home assignment)
40
Assignment 2
(take-home assignment)
40
A total of 5 labs
20
20%
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Overall requirement to pass the paper
• To pass, the students needs to
– Achieve a minimum of 50% overall
Final mark = 0.8 x Course Work + 0.2 x Lab
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Laboratory Experiments
• Laboratory- WS 421
• Lab experiments are compulsory.
• You must come to the assigned lab session according to
your group.
• You are not allowed to go to any other lab session other
than your allocated lab session.
• At the end of the lab you need to sign the attendance
sheet.
• Lab experiments are broken up into three sections.
– Part 1- Theory behind the experiment
– Part 2- Short written pre-test
– Part 3-A description of the lab experiment and the
procedure
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Lab Assessment
• Before the lab
– Complete Lab Pre-test
• During the lab
– Record the results/observations of the lab
experiments in a paper sheet.
– Write a 1-page lab report based on the questions
from the Teaching Assistant (TA)
• End of the lab
– Submit 1) lab pre-test, 2) Lab results and 3) lab report
to the TA
• Note:
– Further instructions about lab procedures will be given in
the lab sessions.
– Bring scientific calculator
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ENEL515 Lab Schedule based on Calendar Week
Starting from Week 11; 7 March, 2022 at WS421
(NOTE: 28 Feb 2022 – Week 10)
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Stream 10 – Week 12, 14, 16, 20, 22; Thurs 12pm-2pm
Stream 11 – Week 11, 13, 15, 19, 21; Fri 8am-10am
Stream 12 – Week 12, 14, 16, 20, 22; Mon 12pm-2pm
Stream 13 – Week 11, 13, 15, 19, 21; Mon 12pm-2pm
Stream 14 – Week 12, 14, 16, 20, 22; ; Tue 2pm-4pm
Stream 15 – Week 11, 13, 15, 19, 21; Thurs 12pm-2pm
Stream 16 – Week 12, 14, 16, 20, 22; ; Fri 8am-10am
Stream 17 – Week 11, 13, 15, 19, 21; Tue 8am-10am
Stream 18 – Week 12, 14, 16, 20, 22; ; Mon 4pm-6pm
Stream 19 – Week 11, 13, 15, 19, 21; Mon 4pm-6pm
Stream 20 – Week 12, 14, 16, 20, 22; ; Tue 8am-10am
Stream 21 – Week 11, 13, 15, 19, 21; Tue 2pm-4pm
Professor Peter Chong - Department of EEE, AUT
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Bachelor of Engineering (Hons)
at
Department of Electrical and Electronic Engineering (EEE)
• BE (Hon) Majors in
– Electrical & Electronic Engineering
– Software Engineering
Professor Peter Chong - Department of EEE, AUT
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Engineering Profession
• Job Satisfaction
• Challenging Work
• Creative Thinking
• Variety of Career Opportunities
• Financial Security
• Intellectual Development
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Electrical Engineering
Focuses on the design, implementation and
maintenance of power and utility systems.
• Power systems engineer
• Control system engineer
• Lighting and building service
engineer
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Electronic Engineering
• Provides a solid grounding in electronic
engineering circuits
• Electronics engineer
• Embedded system engineer
• Software engineer
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Computer/Mobile/Network Engineering
Builds the skills in development, operation and
maintenance of software and hardware, and
their application to mobile communications
devices, embedded systems and networks.
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Computer systems engineer
Software engineer
Apps Development
Network design engineer
Telecommunication engineer
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Basic Units
• To work in an electrical lab you must be able
to use the basic electrical equipment and deal
with the basic units.
• Voltage (The Volt; V)
• Current (The Ampere; A)
• Resistance (The Ohm; Ω)
• Power (The Watt; W)
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Voltage - volts (V)
• Change in energy (J) per unit charge (C)as a
electric charge passes through a circuit from one
point to the other
• Volts=Joules/Coulomb
• The units of voltage are volts (V). 1V = 1J/C.
• Voltage measured between two points
Across the terminals
V
Parallel to the DUT
(Device under test)
Professor Peter Chong - Department of EEE, AUT
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Current- amperes (A)
• Current is a measure of how many charges
(C) passing a point per second (s).
• The units of current are amperes (A).
• 1A = 1C/s
• To measure ampere we must break into the
circuit and insert the ammeter
Through a point
Series to the DUT
A
Professor Peter Chong - Department of EEE, AUT
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Resistance- Ohms (Ω)
• Resistance is a measure of how much voltage
is required to drive one amp about a circuit.
• Ohms Law R= V/I
• Ohms are measured with an ohmmeter, Ω,
with all other supplies disconnected.
Ω
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Power – watts (W)
• Power (W) is a measure of how much energy (J)is
transferred into the circuit each second (s)
• Power is related to current and voltage through
Power = VI =
Energy( Joules ) Charge(Coloumb) Energy( Joules )
=
Charge(Coloumb) Time( Seconds)
Time( Seconds)
Energy (j) = Power (W) x Time (s)
• Energy-the ability to do work
• Power- how fast work can be done
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Other useful units
Quantity
Length
mass
time
Unit
meter, m
kilogram, kg
second, s
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Multiples and Sub-multiples
Prefix
Mega
kilo
none
centi
milli
micro
nano
pico
Symbol
M
k
none
c
m
µ
n
p
Multiplier
1,000,000
1,000
1
1/100
1/1,000
1/1,000,000
1/1,000,000,000
1/1,000,000,000,000
Professor Peter Chong - Department of EEE, AUT
Power of Ten
106
103
100
10-2
10-3
10-6
10-9
10-12
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End of Chapter 1
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