EE-202
Exam II
Practice Probs
MULTIPLE CHOICE.
1.
The frequency domain equivalent of an initialized inductor L is:
(7)
Something else
2.
The step response of a particular circuit with no initial conditions is
v
out
(
t
)
=
1
!
e
!
t
(
)
u
(
t
)
.
The impulse response is:
(1)
!
(
t
)
(2)
u(t)
(3)
!
(
t
)
+
e
"
t
u
(
t
)
(4)
e
!
t
u
(
t
)
(5)
1
!
e
!
t
(
)
"
(
t
)
(6)
1
+
e
!
t
(
)
u
(
t
)
(7)
Something else

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EE-202, Ex 2, page 2
3.
In the circuit below with
v
C
(0
!
)
=
5
volt
,
V
C
(
s
)
at
s
= 2 is:
(1) 4.0
(2) 3.6
(3) 3.2
(4) 2.8
(5) 2.4
(6)
2.0
(7) Something else
4.
The transfer function of the circuit below is
1
)
(
+
=
Bs
A
s
H
where (
A
,
B
) is:
(Hint:
write a node equation at v(t).)
(1) (-1, 3)
(2) (1, 3)
(3) (-1, 2)
(4) (1, 2)
(5) (-1, 1)
(6)
(1, 1)
(7) Something else
5.
In the circuit below with
0
)
0
(
1
=
!
c
v
volt
and
1
)
0
(
2
=
!
c
v
volt
, the switch is turned to
A-C for
1
0
<
!
t
and
2
!
t
and turned to B-C for
2
1
<
!
t
.
Then,
)
(
t
v
o
at
t
= 2.5 is:
(1) 1
(2) 2
(3) –1
(4) –2
(5) 3
(6)
–3
(7) Something else

EE-202, Ex 2, page 3
6.
Let v(t) be the output and v
i
(t) the input.
In order for the circuit below to be stable in
the sense of BIBO, the range of
m
most be:
(1)
m
!
1
(2) 1 > m
(3)
m
!
0
(4) 0 > m
(5)
1
!
"
m
(6)
m > -1
(7) Something else
7.
The transfer function of a system is given as
)
1
(
1
)
(
s
s
s
H
+
=
.
When
)
(
)
45
cos(
2
2
)
(
t
u
t
t
v
i
!
+
=
is applied as the input, the output becomes
)
(
)
cos(
)
(
t
u
t
A
t
v
o
!
+
=
where
)
,
(
!
A
is:
(1)
)
135
,
4
(
!
!
(2)
)
90
,
4
(
!
!
(3)
)
45
,
4
(
!
!
(4)
)
45
,
2
(
!
!
(5)
)
90
,
2
(
!
!
(6)
)
135
,
2
(
!
!
(7) Something else
8.
The impulse response of a system is given as
u
(
t
-1).
When
)
(
)
(
t
u
e
t
v
t
i
!
=
is applied
to this system as the input, the output
)
(
t
v
o
is:
(1)
)
1
(
)
1
(
!
!
!
t
u
e
t
(2)
)
1
(
!
!
t
u
e
t
(3)
)
(
)
1
(
t
u
e
t
u
t
!
+
!
(4)
)
1
(
)
1
(
)
1
(
!
!
!
!
t
u
e
t
(5)
)
1
(
)
(
)
1
(
!
!
!
!
t
u
e
t
u
t
(6)
)
1
(
)
1
(
!
!
!
t
u
e
t
(7) Something else

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EE-202, Ex 2, page 4
9.
The following is the magnitude frequency response of a transfer function H(s).
The best pole-zero plot leading to this magnitude response is:
(5)
Something else