The University of New South Wales 
ELEC1111 Electrical and Telecommunications Engineering
FAMILY NAME:_FIRST NAME:_
STUDENT NUMBER:_
Laboratory Expt  VOLTAGE SOURCES (Battery) and Node
Equations
RESULTS SHEET
i)
SECTION A Lab Preparation
The ideal batte
ELEC1111  Midterm test revision Solution
1.
What is the potential difference between the points x and y in the network?
SOLUTION
_
2.
Find current i.
SOLUTION
i = 0, as all the current reaching point a from source, will be diverted through the short circ
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Labor
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The pro
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ELEC1111  Midterm test revision Solution
1.
What is the potential difference between the points x and y in the network?
SOLUTION
_
2.
Find current i.
SOLUTION
i = 0, as all the current reaching point a from source, will be diverted through the short circ
Family Name .
Given Name .
Student No. .
THE UNIVERSITY OF NEW SOUTH WALES
FINAL EXAMINATION,
SESSION II  2008
ELEC1111
Electrical and Telecommunications Engineering
1.
Time allowed: 3 hours.
2.
PART A: 10 Multiple Choice Questions (Value = 30%).
3.
Ques
Determine the current i
Find the equivalent resistance between terminals A and B, Req
Find the equivalent resistance between terminals C and D, Req
Find the power provided by or dissipated by each element in the circuit, and verify that the law of
conserv
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THE UNIVERSITY OF NEW SOUTH WALES
School of Electrical Engineering & Telecommunications
MIDSESSION EXAMINATION
S1 2015
ELEC1112
Electrical Circuits
TIME ALLOWED:
TOTAL MARKS:
TOTAL NUMBER OF QUESTIONS:
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Student No. .
Signature .
THE UNIVERSITY OF NEW SOUTH WALES
School of Electrical Engineering & Telecommunications
FINAL EXAMINATION
Session 1, 2014
ELEC1112
Electrical Circuits
TIME ALLOWED:
TOTAL MARKS:
TOTAL NUMBER OF QUESTION
CHAPTER 10
Exercises
E10.1 Solving Equation 10.1 for the saturation current and substituting values, we have
Is =
iD exp(vD / nVT ) 1
10 4 = exp(0.600 / 0.026) 1 = 9.502 10 15 A Then for vD = 0.650 V, we have
= 0.6841 mA
iD = I s exp(vD / nVT ) 1 = 9.502
Lecture 13: Transformers
ELEC1112 Electrical Circuits
A transformer is an AC device which helps to transfer
power from one circuit to another, without a change in
frequency.
It is used to convert AC power at a certain voltage to AC
power at a different vo
Lecture 14: Diodes & Voltage
Shaping Circuits
ELEC1112 Electrical Circuits
Diodes are nonlinear
circuit elements
Resistor: a linear element
i
(short circuit)
R
R 00
+
v
_
i
1
1
slope
slope
R
R
R
0
v
R
R
(open circuit)
Symbol
VI characteristic
The ideal
Lecture 11: OpAmps Part I
ELEC1112 Electrical Circuits
What is an OpAmp?
It is an electronic unit that behaves like a voltagecontrolled
voltage source
It is an active circuit element designed to perform
mathematical operations of addition, subtraction,
Midsession exam
Thursday 12:001:00 in Week 7
During normal lecture class
Surname beginning A N : ChemSc M18
Surname beginning O Z : Colombo B Theatre
Please be on time 55 minutes duration
Material up to the end of RC / RL Transients
Lecture 9: Sinusoids
Lecture 7: Capacitors and RC
Transients
ELEC1112 Electrical Circuits
Capacitors
Capacitor: Constructed using two parallel conducting plates
separated by an insulating material (e.g. air)
V
+
+
+
+
+
+
+
+
+
+
Dielectric
volts
Capacitance

C
d  distance
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Student Signature .
THE UNIVERSITY OF NEW SOUTH WALES
SAMPLE EXAMINATION
ELEC1111
Electrical and Telecommunications Engineering
Time allowed: 3 hours.
1. CANDIDATES should attempt ALL QUESTIONS
2. Questions are of different values.
3.
CHAPTER 13
Exercises
E13.1 given by the Shockley equation: 1 v For operation with iE > I ES , we have exp BE > 1 , and we can write V T v iE I ES exp BE V T Solving for v BE , we have The emitter current is v iE = I ES exp BE V T
i v BE VT ln E I ES
v BC
CHAPTER 15
Exercises
E15.1 If one grasps the wire with the right hand and with the thumb pointing north, the fingers point west under the wire and curl around to point east above the wire. If one places the fingers of the right hand on the periphery of th
CHAPTER 16
Exercises
E16.1 The input power to the dc motor is Pin = Vsource I source = Pout + Ploss Substituting values and solving for the source current we have 220I source = 50 746 + 3350 I source = 184.8 A Also we have
50 746 Pout 100% = = 91.76% 50 7
CHAPTER 14
Exercises
E14.1
(a) iA =
vA RA
iB =
vB RB
iF = iA + iB =
vA RA +
v A vB + RA RB
v o = RF iF = RF
(b) For the vA source, RinA (c) Similarly RinB = RB .
vB RB v = A = RA . iA
(d) In part (a) we found that the output voltage is independent of th
CHAPTER 17
Exercises
E17.1 From Equation 17.5, we have
Bgap = Kia (t ) cos( ) + Kib (t ) cos( 120 ) + Kic (t ) cos( 240 )
Using the expressions given in the Exercise statement for the currents, we have
Bgap = KI m cos(t ) cos( ) + KI m cos(t 240 ) cos( 12
CHAPTER 12
Exercises
E12.1 (a) vGS = 1 V and vDS = 5 V: Because we have vGS < Vto, the FET is in cutoff. (b) vGS = 3 V and vDS = 0.5 V: Because vGS > Vto and vGD = vGS vDS = 2.5 > Vto, the FET is in the triode region. (c) vGS = 3 V and vDS = 6 V: Because
The University of New South Wales
School of Electrical Engineering and Telecommunications
ELEC1111
Electrical and Telecommunications Engineering
Practical Exam  Sample paper
Family name:
Student number:
Q1. Set the signal generator to give a sine wave wi
THE UNIVERSITY OF NEW SOUTH WALES
School of Electrical Engineering & Telecommunications
SAMPLE FINAL EXAMINATION
ELEC1111
Electrical and Telecommunications Engineering
TIME ALLOWED:
TOTAL MARKS:
TOTAL NUMBER OF QUESTIONS:
3 hours
100
6
Reading Time: 10 mi
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Student No. .
Student Signature .
THE UNIVERSITY OF NEW SOUTH WALES
SAMPLE EXAMINATION
ELEC1111
Electrical and Telecommunications Engineering
Time allowed: 3 hours.
1. CANDIDATES should attempt ALL QUESTIONS
2. Questions are of different values.
3.
THE UNIVERSITY OF NEW SOUTH WALES
SAMPLE EXAMINATION
ELEC1111
Electrical and Telecommunications Engineering
SOLUTIONS
Question 1: (6 marks)
Consider the circuit shown in Figure 1.
(a)
Calculate the voltage V1. (V1 = 15 2x2 = 11V)
(b)
Calculate the power
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Given Name .
Student No. .
Signature .
THE UNIVERSITY OF NEW SOUTH WALES
School of Electrical Engineering & Telecommunications
Sample Examination
Electrical and Telecommunications Engineering
TIME ALLOWED:
TOTAL MARKS:
TOTAL NUMBER OF QUESTI
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Faculty of Engineering
School of Electrical Engineering and Telecommunications
ELEC 1111 Summary
Dr. Georgios Konstantinou
Lecturer
School of Electrical Engineering & Telecommunications
The University of New South Wales
0
ELEC1111 Summary
1
Topic 1 Circui
THE UNIVERSITY OF NEW SOUTH WALES
SAMPLE EXAMINATION
ELEC1111
Electrical and Telecommunications Engineering
SOLUTIONS
Question 1: (6 marks)
Consider the circuit shown in Figure 1.
(a)
Calculate the voltage V1. (V1 = 15 2x2 = 11V)
(b)
Calculate the power
ELEC 1111  Electric Circuits
Math Handbook
Scope of this document
The scope of this Handbook is to provide a collection of the basic mathematical formulas, tables
and methods that will be valuable for those taking the ELEC1111  Electric Circuits course
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THE UNIVERSITY OF NEW SOUTH WALES
School of Electrical Engineering & Telecommunications
FINAL EXAMINATION
Session 1, 2014
ELEC1112
Electrical Circuits
TIME ALLOWED:
TOTAL MARKS:
TOTAL NUMBER OF QUESTION
Family Name .
Given Name .
Student No. .
Signature .
THE UNIVERSITY OF NEW SOUTH WALES
School of Electrical Engineering & Telecommunications
FINAL EXAMINATION
Session 1, 2016
ELEC1111
Electrical and Telecommunications Engineering
TIME ALLOWED:
TOTAL MARKS