EE20 - Elementary EE Lecture(1)

8/2/2019 EE20 - Elementary EE Lecture(1)

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EE20

Elementary Electrical Engineering

Q4 AY2011-2012


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COURSE SYLLABUS

I. Vision Statement

II. Mission Statements

*.

IV. EECE Program Educational Objectives: (1) to (4)

V. Student Outcomes

VI. Course Outcomes

VII. Course Coverage

VIII. Policies

IX. Miscellaneous

*ABET and PTC (Philippine Technological Council)


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COURSE OUTLINEI. Basic Concepts

1. Electrical Properties2. Electrical Quantities

3. Electrical Circuits

4. EE Tools: Projects Toolbox

II. Basic Laws

V. Operational Amplifiers

1. OpAmp Parameters2. Ideal OpAmp Analyses

3. Basic Types, Cascaded

4. EE Tools: Circuit Assembly

VI. Capacitors & Inductors

1. Ohms Law2. Kirchhoffs Laws

3. EE Tools: Circuit Design

III. Methods of Analysis

1. Nodal Analyses

2. Mesh Analyses3. EE Tools: Circuit Modelling

IV. Circuit Theorems

1. Linearity

1. Capacitor Properties2. Inductor Properties

3. EE Tools: Component Searches

VII. First-Order Circuits (RL, RC)

1. Source-Free Responses

2. Unit Responses:Step, Impulse, Ramp

3. EE Tools: Transient Analyses

VIII.Second-Order Circuits (RLC)

.

3. Source Transformations4. Thevenins Theorem

5. Nortons Theorem

6. Maximum Power Transfer

7. EE Tools: Selling Ideas

. ource- ree esponses

2. Series RLC Circuits3. Parallel RLC Circuits

4. Unit-Step Responses

5. Second-Order OpAmp Circuits

6. EE Tools: Skills Demonstration


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INTRODUCTIONS

About the Professor


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About Me

My name is __________.

I am (age) and I live in (current residence).

I enrolled in MIT as (Engineering Program) student because...

This term, I enrolled in this class so that...

And, my career plan after graduation is...


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CLASS OFFICERSI. Election & Appointment

1. President

2. VP Executive

.

4. Treasury

5. Project Manager

6. Escorts (Male & Female)II. Agenda

1. Classroom Learning Activities

2. Field Learning Activities3. Project-Based Activities


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Get to know the Professor

Career Planning

CONSULTATIONS/ADVISING

Goal Setting

Resume

Sell Ideas, Services & Products


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Bring an electric/electronic device, equipment, or gadget that you

want to investigate. Disassembly/assembly needed.

Bring EE tools in a toolbox:

1. Screw drivers

EE TOOLBOX PROJECT

.

3. Pliers

4. Wire cutter

5. Wire stripper (optional)

6. Tweezer7. Soldering iron and holder

8. Soldering lead

.

10.VOM digital meter

Bring components:

wires, resistors, alligator clips, LED, battery, Christmas

light/lamp, prototyping breadboard, PCB breadboard, DC motor


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Module I: Basic ConceptsChapter 1: Fundamentals of Electric Circuits, 4th ed., Charles Alexander, Matthew Sadiku


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System of Units

Basic SI Units

QuantityQuantityQuantityQuantity Basic unit Basic unitBasic unitBasic unit SymbolSymbolSymbolSymbol

Length meter m

Mass kilogram Kg

Time second s

Electric Current ampere A

Thermodynamic

Temperaturekelvin K

Luminous Intensity candela cd


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Electrical Units and Terms

Derived SI Units, common usage in electric circuit theory

Decimal multiples and submultiples of SI units


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Electric Charge

Charge (in Coulombs)is an inherent electrical property

matter consists

Electronic charge, eis 1.602 10-19 C

Proton charge, pis +1.602 10-19 C

The charges that occur in nature

are integral multiples of the

electronic charge.


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Electric Current

Current (in Amperes)is the amount of charge passing

roug a g ven area per un me

Conventional current flow(shown right)


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Conservation of Power

The law of conservation of energy

Energy is the capacity to do work, measured in

joules (J).

= 0p

==t

t

t

tvidtpdtw

0 0


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Circuit Elements

Active Elements Passive Elements

A dependent source is an active element in which thesource quantity is controlled by another voltage or current.

They have four different types: VCVS, CCVS, VCCS, CCCS.

Keep in minds the signs of dependent sources.


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Additional Resources

EE for Non-EEs (Emerson Network Power)

PCB Fabrication (Emerson Network Power)


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a en e as c oncep sGuess the term

Start Now

Coverage: Lecture, Module 1

1. Group consists of 2 members2. One member will guess the term within 120

seconds.

Part A. Member will guess the term by defining it

Part B. Partner will enumerate the examples of the term

Part C. Partner will explain the term

Skip


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A. Definitions1. International System of Units

2. Proton/Electron Charge3. Electric Charge

4. DC or Direct Current

5. Current

6. Voltage

1. Law of Conservation of Charge

2. Types of Current3. Voltage Drop/Rise

4. Passive Sign Convention

5. Law of Conservation of Energy

6. Active and Passive Elements

C. Expositions

7. Power 8. Energy

9. Electric Circuit

10. Circuit Analysis

1. Basic SI Units

2. Derived SI Units

B. Enumerations

.

4. Electrical Formula5. Active Sources

6. Passive Elements


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a en e as c oncep sQuiz Bee

Start Now

Coverage: Example & Practice Problems

1. Group consists of 5 members2. Each member will solve a problem

within 30 seconds.

3. Write the final answer clearly on A4

paper using a marker.

Skip


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Round 1

PP 1.10 Try applying the problem solving process to P1.19.

Continue to Next Round


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Stop!


ANSWER: I = 3A


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Round 2

PP 1.1 Calculate the amount of charge represented by fourmillion protons.



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Stop!

ANSWER: Q = +6.408 x 10-13 C

R d 3


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Round 3

PP 1.6 A stove element draws 15A when connected to a 240-Vline. How long does it take to consume 60kJ?



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Stop!

ANSWER: T = 16.667 seconds

R d 4


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Round 4

PP 1.5 Find the power delivered to the element at t = 5 ms ifthe current remains the same at

i = 5 cos 60t A

but the voltage is

v = (10 + 5 0t i dt) V.

Bonus time: Add 30 seconds



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Stop!

ANSWER: P = 29.7 Watts

Round 5


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Round 5

PP 1.3 The current flowing through an element is

,i =

2t2 A, t > 1

Calculate the charge entering the element from t = 0 to t = 2 s.



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Stop!

ANSWER: Q = 6.667 C

Round 6


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Round 6

PP 1.2 If the charge Q = (10 10 e-2t ) mC, find the current att = 0.5 s.


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Round 7


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Round 7

PP 1.9 A homeowner has an electricity bill based on thefollowing residential rate schedule:

Base monthly charge of $12.00First 100kWh per month at 16 cents/kWhNext 200kWh per month at 10 cents/kWhOver 300kWh per month at 6 cents/kWh

Calculate the average cost per kWh is only 200kWh areconsumed in July when the family is on vacation most of the

.



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Stop!

ANSWER: Cost = 13.50 cents/kWh

Round 8


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Round 8

PP 1.8 If an electron beam in a TV picture tube carries 1013

electrons/second and is passing through plates maintained ata po en a erence o , ca cu a e e power n ebeam.

St !



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Stop!

ANSWER: P = 48 mW

Round 9


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Round 9

PP 1.4 To move charge Q from point A to point B requires30 J. Find the voltage drop VAB if Q = 6 C.

St !



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Stop!

ANSWER: V = 5 V

Round 10


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Round 10

PP 1.7 Compute the power absorbed or supplied by eachcomponent of the circuit in Fig 1.16.

+

+

I = 5 A8 A

3 A

0.6 x I+3 V

+5 V

2 V

P1

P2

P3P4


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LIFELONG LEARNING


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Experience Journal (a.k.a. Experiment Journal)

Notebook Bounded, not spring-bound

Black cover

r e own eas:

1. Define a problem

2. Present the givens, or known variables

3. Hypothesize, or give possible solutions

4. Attempt a solution, solve and record5. Evaluate, Is the problem solved?

6. Try Again, Improve

7. Conclude

Write reference (lists, websites, books, resources, contacts)

Demonstrations


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1. LED TV Picture Tube

How much charge is required in the picture tube?

2. Meralco Billing Statement

List down home appliances commonly used

Copy the electrical ratings from the nameplate (or see

Estimate the average daily utility time of each appliance

Calculate the energy consumption

Use the bill metrics to compute for the costs

Computer Simulation


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1. Calculate the power absorbed

or supplied by each element

p3. Calculate the power absorbed

or supplied by each element

2. Find I in the network below. 4. Find V0

in the circuit below.

Computer Simulation (Answer)


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1. P(9V) = -36 W

P1 = 24 WP2 = 12 W

2. I = 3 A

= -.

P(3 x IO) = 27WP1 = 30 W

P2 = 15 W

4. V0 = 18V


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Innovation &


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EE Tools

Comprehensive Problems


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1. A telephone wire has a current of 20 A flowing through it. How

long does it take for a charge of 15 C to pass through the wire?2. A lightning bolt carried a current of 2 kA and lasted for 3 ms. How

many coulombs of charge were contained in the lightning bolt?

.

in one day. Calculate: (a) the total energy consumed in kWh, (b)the average power per hour.

4. The graph below represents the power drawn by an industrial plant

between 8:00 and 8:30 A.M. Calculate the total energy in MWhconsumed by the plant.

Comprehensive Problems


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5. A battery may be rated in ampere-hours (Ah). A lead-acid battery is

rated at 160 Ah. What is the maximum current it can supply for 40 h?

How many days will it last if it is discharged at 1 mA?

.

(hp), which equals 746W. A small electric car is equipped with a40-hp electric motor. How much energy does the motor deliver in

one hour?

7. How much energy does a 10-hp motor deliver in 30 minutes?

Assume that 1 horsepower = 746 W.

Comprehensive Problems (Answer)


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1. 750 khrs

2. 6 C3. (a) 10 kWh

(b) 416.7 W

. .

5. (a) 4 A(b) 6,667 days

6. 29.84 kWh

7. 13.43 MJ

EE20 - Elementary EE Lecture(1)

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