ECE 3010 Spring 2015
ECE 3010 Midterm Exam II
1 April 2015
Sow Tia/US
Name:
Instructions: There are 3 problems for a total of 100 points. The weighting of each question is indicated.
No phones, tablets, or other devices with internet connectivity. Closed
ECE3010
AU13
Midterm1 Solution
Problem1:
A mismatched transmission line with = 4.6
+ 2
=
=
+
2
4
2
The distance between two adjacent voltage maxima is /2. Therefore, the number of voltage maxima
can be measured on the mismatched transmission line is
4.
Homework #4
A
a x a A4
Deadline: 1/10 17:00717
P. 5-3 A long, round wire of radius a and conductivity is coated with a material of conductivity
0.1.
a) What must be the thickness of the coating so that the resistance per unit length of the
uncoated wir
ECE 3010 Homework 2
Problem 1.
In our class discussion of transmission lines, we defined parameter (R + jL)(G + jC ) .
Since is a complex number, it can be expressed in terms of its real and imaginary parts
= + j where is defined as the real part of and
ECE 3010 (Rojas) Spring 2015: Solutions for Homework set #13
Problem 6.6 The square loop shown in Fig. P6.6 is coplanar with a long, straight
wire carrying a current
I(t) = 5 cos(2 104t) (A).
(a) Determine the emf induced across a small gap created in the
ECE 3010 (Rojas) Spring 2015: Solutions for Homework set #12
Problem 5.25 A cylindrical conductor whose axis is coincident with the z-axis has
an internal magnetic eld given by
2
for r a
H = [1 (4r + 1)e4r ] (A/m)
r
where a is the conductors radius. If a
ECE 3010 Homework 3
Problem 1. Consider a lossless transmission line of length l with characteristic impedance Zo terminated in an open
circuit (ZL ).
Sketch by hand the magnitude and phase of () = () () for 3/2 0. Use + = 1 and
() < . For the magnitude
ECE 3010 Homework 4
Problem 1
Write solution in Ohm units.
Problem 2
(Ohm units)
Problem 3
(Smith Charts can be downloaded from CARMEN)
Problem 4
Include a Smith Chart in your solution. On the Smith Chart,
label the point corresponding to the normalized i
ECE 3010 (Rojas) Spring 2015: Solutions for Homework set #11
Problem 5.4 The rectangular loop shown in Fig. P5.4 consists of 20 closely
wrapped turns and is hinged along the z-axis. The plane of the loop makes an
angle of 30 with the y-axis, and the curre
ECE 3040
Solution for Chapter 2 Homework
Spring 2017
2.4
To step up or lower down the voltage level along the transmission lines. For example, HV transmission
lines and distribution lines have different voltage level. The primary purpose of transmission t
2. TRANSMISSION LINES
Applied EM by Ulaby, Michielssen and Ravaioli
Chapter 2 Overview
Transmission Lines
A transmission line connects a generator to a load
Transmission lines include:
Two parallel wires
Coaxial cable
Microstrip line
Optical fiber
Wa
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Instructions: This test is open book and open notes. I suggest that you write your name
at the top of this sheet of paper before you start. Please reduce all answers to the simplest
possible form in order t
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Instructions: This test is open book and open notes. I suggest that you write your name
at the top of this sheet of paper before you start. Please reduce all answers to the simplest
possible form in order to r
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Midterm 2
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Instructions: This test is open book and open notes. I suggest that you write your name
at the top of this sheet of paper before you start. Please reduce all answers to the simplest
possible form in order to
ECE 3010
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Autumn 2014
October 1, 2014
Instructions: This test is open book and open notes. I suggest that you write your name
at the top of this sheet of paper before you start. Please reduce all answers to the simplest
possible form in order to