ECE470
FINAL EXAM SOLUTIONS
SPRING 2016
Instructions:
1. Closed-book, closed-notes, open-mind exam.
2. Work each problem on the exam booklet in the space provided.
3. Write neatly and clearly for part
EE470/570
HOMEWORK #2 SOLUTIONS
SPRING 2016
Problem 4.1 (Problem 3-10 p. 76)
Neglecting fringing eects,
Ba
0.6
=
= 4.78 105 A-t/m
o
4 107
= B1 A1 = B1 = Ba = 0.6 T
Ba = 0.6 T = Ha =
a = Bg A1 = 1
= H1
ECE470
HOMEWORK #7 SOLUTIONS
SPRING 2016
Problem 7.1
30 o
Ns
sa
H2
saxis
g
Ns
H1
sa
(a) Ns is = H1 g H2 g
(
)
(
)
5RL
7RL
0 = o H1
+ o H2
6
6
7Ns is
= H1 =
12g
5Ns is
= H2 =
12g
(1)
= 5H1 + 7H2 = 0
(
ECE470
HOMEWORK #3 SOLUTIONS
SPRING 2016
Problem 3.1 (Problem 3-18 p. 78)
(a) N i = H1 g1
= B1 = o H1 =
o N i
g1
4 107 200 5
0.004
=
= 0.3142 T
(b) N i = H2 g2
= B2 = o H2 =
(c) = 1 + 2
= B = B1 + B2
ECE470
HOMEWORK #9 SOLUTIONS
SPRING 2016
Instructions:
1. Closed-book, closed-notes, open-mind exam.
2. Work each problem on the exam booklet and write your final answers in the space provided.
3. Wri
ECE470
HOMEWORK #1 SOLUTIONS
SPRING 2016
Problem 1.1
Z Z
=
B dS =
S
=
v(t) =
v(t)
=
B dS
=
B(x) dxdy
0
S
Z 6Z 6
o i(t)
Z 6Z 6
3
6o i(t)
[ln x]63
2x
2x
3
0
6o i(t)
6(ln 2) 4 107 10 cos(120t)
[ln 6
ECE470
EXAM #2 SOLUTIONS
SPRING 2012
Instructions:
1. Closed-book, closed-notes, open-mind exam.
2. Work each problem on the exam booklet in the space provided.
3. Write neatly and clearly for partial
ECE470
EXAM #2 SOLUTIONS
SPRING 2011
Instructions:
1. Closed-book, closed-notes, open-mind exam.
2. Work each problem on the exam booklet in the space provided.
3. Write neatly and clearly for partial
ECE470
EXAM #1 SOLUTIONS
SPRING 2012
Instructions:
1. Closed-book, closed-notes, open-mind exam.
2. Work each problem on the exam booklet in the space provided.
3. Write neatly and clearly for partial
ECE470
EXAM #1 SOLUTIONS
SPRING 2011
Instructions:
1. Closed-book, closed-notes, open-mind exam.
2. Work each problem on the exam booklet in the space provided.
3. Write neatly and clearly for partial
ECE470
HOMEWORK #7 SOLUTIONS
SPRING 2013
Problem 7.1
30 o
Ns
sa
saxis
H2
g
Ns
H1
sa
(a) Ns is = H1 g H2 g
(
)
(
)
5RL
7RL
0 = o H 1
+ o H2
6
6
7Ns is
= H1 =
12g
5Ns is
= H2 =
12g
(1)
= 5H1 + 7H2 = 0
ECE470
HOMEWORK #6 SOLUTIONS
SPRING 2013
Problem 6.1 (Problem 3.20 p. 166)
(
(a) q =
Wm =
Wm =
(b) Fe =
Fext =
)
o A
v = C (x)v
x
1
q2
xq 2
Wm (q, x) =
qv =
=
2
2C (x)
2o A
1
1
o Av 2
Wm (v, x) =
qv =
ECE470
HOMEWORK #3 SOLUTIONS
SPRING 2013
Problem 3.1 (Problem 1.14 p. 47)
(t) = N B (t)Ac = N Ac Bmax sin t = Li(t) = LImax sin t
d
2Vrms cos t
v ( t) =
= N Ac Bmax cos t = Vmax cos t =
dt
N Ac Bmax
2
ECE470
EXAM #2 SOLUTIONS
SPRING 2013
Instructions:
1. Closed-book, closed-notes, open-mind exam.
2. Work each problem on the exam booklet in the space provided.
3. Write neatly and clearly for partial
ECE470
EXAM I SOLUTIONS
SPRING 2013
Instructions:
1. Closed-book, closed-notes, open-mind exam.
2. Work each problem on the exam booklet in the space provided.
3. Write neatly and clearly for partial