ECET32700_Final_SOL_SP23
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Course
327
Subject
English
Date
Dec 6, 2023
Type
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12
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Purdue
University
-
School
of
Engineering
Technology
Final
examination
-
Spring
semester,
AY2022/23
ECET
32700
Instrumentation
and
Data
Acquisition
Design
Wednesday,
May
312023
10:30AM
—
12:30PM
(120
mins)
MTHW
304
Instructor:
Dr.
Noori
Kim
Student
Name:
S
a@
Purdue
Email
ID:
Instructions
to
students:
1.
This
examination
comprises
Thirty
(30)
Questions
printed
on
Twelve
(12)
pages,
including
the
cover
page
and
appendix.
Each
question
is
worth
One
(1)
point
with
a
total
of
Thirty
(30)
points.
”»
2.
For
all
questions,
clearly
write
your
final
answer
choice(s)
in
“Your
answer:
zone.
3.
For
all
short
answers,
write
units
unless
otherwise
unitless
quantities
(units
-have
partial
points
for
this
type
of
question).
4.
All
answers
must
be
written
on
this
Exam
Question
Paper.
5.
A
calculator
and
one-page
(both
sides),
100%
hand-written,
letter-sized
cheat
sheet
are
allowed
in
this
exam.
At
the
end
of
the
examination,
Write
your
Purdue
email
ID
on
all
front
pages
and
any
additional
pages
attached
to
your
script
(if
any).
Failure
to
do
so
will
mean
that
your
work
will
not
be
identified.
The
University
reserves
the
right
not
to
mark
your
script
if
you
fail
to
follow
these
instructions.
Final
Examination
-
Spring,
AY2022/23
Page
1
of
12
1.
What
is
the
best
answer
for
A?
Physical
Phenomenon
i
it
sl
Display
(@.
Processed
voltage
.
Physical
signal
@.
Decimal
numbers
Electrical
signal
None
of
the
above
2.
Which
is
not
relevant
to
the
NI
USB-6008
Device
Specifications?
(.
8
Single-ended
Analog
input
channels
@.
2
Digital
1/0
channels
@.
ADC
type:
Successive
approximation
@),
Single-ended
input
resolution:
11bits
@\Jone
of
the
above
g
Your
answer:
Your
answer:
3.
Find
an
incorrect
pair
of an
SI
unit
constant
and
unit
.
Hyperfine
transition
frequency
of
Cs:
9,192,631,770
Hz
(@.
Speed
of
light
in
vacuum:
299,792,458
m/s
).
Plank
constant:
6.62607015
x
104
J/Hz
lementary
charge:
1.602176634
x
10"
C
.
Boltzmann
constant:
1.380649
x
1023
J/K
;L.
Your
answer:
4.
“BLANK?”
is
a
process
to
convert
the
continuous
amplitude
of
the
sampled
signal
into
binary
states.
What
is
the
best
word
to
fill
in
the
“BLANK”?
@.
Holding
Quantization
3.
ADC
@.
Sampling
(®).
None
of the
above
adey
Your
answer:
5.
The
datatype
is:
.
Double
Precision
Integer
©@.
Double
Precision
Floating-Point
3.
Any
constant
@.
Array
:
@
one
of
the
above
F
Your
answer:
Final
Examination
—
Spring
AY2022/23
Page
2
of
12
Sensor/Transducer
.
signal
Conditioni
ADC
Computer
or
User
Output
i
Purdue
email
ID:
6.
10.
“BLANK?”
is
one
of
a
sensor’s
properties
to
specify
the
maximum
expected
overall
error.
And
the
best
way
is
to
express
the
“BLANK”
of
each
element
in
terms
of
the
transfer
function.
What
is
the
best
word
to
fill
in
the
“BLANK”?
Accuracy
.
Repeatability
@.
Linearity
@.
Hysteresis
(5.
Reproducibility
®.
Resolution
’
Your
answer:
“BLANK?”
time
constant
represents
the
time
at
which
the
output
value
has
changed
by
approximately
the
maximum
total
change.
Fill
in
the
BLANK.
.
Two
@.
Four
%
Five
.
Eight
(®.
Ten
Your
answer:
3
Data
is
passed
into/out
of
Execution
Control
structures
using:
D.
Auto
Indexing
(@.
Tteration
Terminal
).
Count
Terminal
unnels
(®).
None
of
the
above
¢
Your
answer:
A
structure
used
to
execute
different
codes based
on
the
output
of
a
logic
or
test
condition
is
called
a:
(D.
While
Loop
@.
DAQ
assistant
(34
Boolean
Switch
@
Case
Structure
®).
For
Loop
Your
answer:
)
A force
sensor
has
an
output
range
of
£8
volts
(V)
and
a
measurement
range
of
50
newtons
(N)
with
a
resolution
of
0.1%
Full
Scale
(FS).
Find
the
smallest
change
in
force
that
can
be
measured.?
0.IN
100
¥
0.03]
=0,
1IN
2.
0.05N
@.
8mV
@.
16mV
.
®.
0.IN/V
,
Your
answer:
Final
Examination
—
Spring
AY2022/23
Page
3
of
12
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11.
Which
statement
is
not
true
for
a
thermocouple?
(D.
Requires
a
temperature
difference
between
the
measuring
junction
and
reference
junction.
(2.
Consists
of
two
wires
of
different
metal
alloys.
(3.
When
the
measured
voltage
value
does
not
fall
exactly
on
the
thermocouple
table,
the
value
needs
to
be
interpolated.
There
are
two
types,
NTC
and
PTC
"
Type
K
is
for
Chromel
and
Alumel
alloys
¢.
Your
answer:
12.
A
type
J
thermocouple
measures
22.6mV
with
a
0°C
reference.
What
is
the
junction
temperature?
Refer
to
the
appendix
table:
13.57°C
"o
411.78°C
4ro
+
o
(.6
-2.¢)
®.
411.78°F
22.68-220.4
@.
413.57°F
=41b
¢+
3,51
(®.
None
of the
above
Your
answer:
‘
(&
13.
Given
453.87
°R,
convert
the
temy
=
M.
21.45°C
@.
-65°C
453.81
x5
_
a5
®.
-21.45°C
q
%
-21°C
\N‘_)
.21°C
K
Your
answer:
%
=
252.1S
14.
Which
is
not
an
SI
“base”
unit?
@.m
s
o
.
K
®.
mol
3
Your
answer:
15.
What
infrastructure
is
optional
(not
required)
to
translate
the
state
diagram
into
a
LabVIEW
programming?
(D.
While
Loop
@.
Case
Structure
Shift
Register
.
Boolean
.
Enum
‘L
Your
answer:
Final
Examination
—
Spring
AY2022/23
Page
4
of
12
|
|
|
Purdue
email
1D:
16.
Refer
to
the
picture
below.
Given
the
Vin,
what
is
the
expected
Vout?
Vin
+2.5v
o
Vout
2.5V
=
+5V,
}-VW—
i
2.5V
°‘m
2.5V
@
+5v
ov
2.5V
ov|
+2.5V
ov
3
17.
Refer
to
the
State
Transition
Diagram
below.
When
8-bit
input
sequence
is
given
as
“01001010”
find
the
corresponding
output
sequence.
[
Your
answer:
D.
01011011
©.
00101010
.
01001010
%00100101
5.
01000101
4.
Your
answer:
Final
Examination
—
Spring
AY2022/23
Page
5
of
12
18.
When
PW1=1, PW2=2, PW3=2,
what
is
expected
state
transition
based
on
the
following
State
Machine
VI?
Choose
the
best
answer.
w1
w2
e
D
#
e
v
i
sop
sute
]
e
[1000}
[
Init",
Defoutt
—H
T
Door
Open
%It
keeps
looping
states
Init,
S1,
and
S12.
.
Init,
S1,
S12,
then
it
goes
to
the
stop
state.
@.
Init,
S1,
then
it
goes
to
the
S12
state.
@.
It
goes
to
the
stop
state
directly.
®.
Init,
S1,
S12,
S123,
then
it
goes
to
the
Init
state.
|
Your
answer:
Final
Examination
—
Spring
AY2022/23
Page
6
of
12
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Purdue
email
1D:
15kO
+8V
L
>
1.5kQ
Va
1o+
$
-8V
Vy
15kQ
Yo
Figure
1
An
op-amp
circuit
(Questions
19-20)
19.
What
is
the
voltage
at
the
inverting
terminal
of
the
op-amp
when
v,=
3V
and
v,
=2V
in
Figure
1?
@D.
1v
o
@.-8v
®.
8V
Your
answer:
3
20.
What
is
the
voltage
at
the
non-inverting
terminal
of
the
op-amp
when
v,
=
3V
and
v,
=2V
in
Figure
1?
o
.2V
®.3V
@.
-8V
®.
8V
'
Your
answer:
21.
What
is
the
output
voltage
(v,)
when
Ry
=
5kQ,
Ro=10kQ,
Ra=
10k,
Rp=10kQ,
R3
=
2.5kQ,
and
Rc=
10kQ?
RC
MWV
R,
v
o—AMW-
R,
R
vz
2
R3
—0
Ylo
v
L
@3
Ve
=
=
ok
agk
1ok
D.
vo=2v;
+4vs
-4v3
~Vy
@.vo=vi+v2-2v3
.!1
l‘-
T
—
r(—IVQ‘v‘-*""vs)=v°
@.vo=vi+v2+4v;
Sk
jow
ot
Vo
=2v;
+v2-4v3
=
2.V|"v3-
%None
of
the
above
Vaz=
<
¢-
Your
answer:
Final
Examination
—
Spring
AY2022/23
Page
7
of
12
22.
Capacitors
are
circled
below.
Which
one
does
smooth
signals
so
called
as
a
“capacitor
filter?”
swecimm
D
w
<
e
wo
R~
o
m
A
&
oo
o
o
01
mfl;::«'i)
e
\Lvm-
c‘:’n
E
Voutl
L
s
-
o)
e
T
A
o
aw
it
1
-
iy
[TV
S
Y
o
el
el
e~
e
N
o
™0
%
eyl
b
w/l/
o
Vout2
—
e
Pty
e
3
moQw
>
Opese
Your
answer:
23.
What
is
|[Vout/Vin|
of the
following
circuits?
Yous|
-
L
O
o
e
(v.l
I
(Guerd
WeR
=
Joorcyni
v
=
14WeRr)t
out
w?
g
Vel
=
T
VCiasweny
Voue|
_
1
Vil
—
J(wRO)Z-1
Voue|
_
wRC
Vin
V(wRC)*-1
L
Your
answer:
s
0Qe
Final
Examination
—
Spring
AY2022/23
Page
8
of
12
Purdue
email
ID:
24.
A
measurement
signal
has
a
frequency
<lkHz,
but
there
is
unwanted
noise
at
about
IMHz.
Design
a
low-pass
filter
that
attenuates
the
noise
to
1%.
What
is
the
best
possible
resistor
(R)
and
capacitor
(C)
values?
D.
R
=160Q,
C
=
0.6uF
\
w
‘ok
@.R=1000Q,
C=0.1pF
moem
W
=
1009,
C=0.16pF
anRe
@.
R
=100Q,
C
=
16uF
®.R=10kQ,
C=0.1pF
Your
answer:
\
3
25.
Which
circuit
the
best
matches
with
the
following
input
and
output
voltage
signals?
DC
reference
voltages
upper
center
lower
‘\M/
+V
VWI
-V
+V
le
v
Va
e
Vuut
ov
Your
answer:
Final
Examination
—
Spring
AY2022/23
Page
9
of
12
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26.
An
analog
signal
is
given
in
the
time
and
frequency
domain.
What
is
the
minimum
sampling
rate
necessary
to
reconstruct
the
signal
based
on
the
Nyquist
theorem?
3%
f
Py
02
—
03
=
&
i)
=
S
o
S
-
=
0%
-
p
.
|
YA
1
100051001
1.0015
1,002
1.00251.003
1.00351.004
1.0045
1.005
L
U
;‘
lk"‘
Ti
(
)
0
04081218
2225
3
34
3942
47%..
.
ime
(sec,
Frequency
(kHz)
*
A
Your
answer:
IO‘
"\'
k“e
/
JGW\P"{—
27.
Pikachu
wants
to
connect
a
load
to
5V
and
implements
the
following
circuits,
but
the
voltage
measured
at
the
load
was
not
5V
and unstable.
Draw
a
circuit
to
fix
the
problem.
Use
an
op-amp.
Vee
.
B
.
10V
Your
answer
(drawing)
is
in
this
box:
¢l
-
™
=
=
2]
AN
peo
R
ok
T
28.
What
is
the
name
of the
function
below
used
with
a
cluster?
String
Application
N
-
=
|
Age
=
Pass/Fail
|
Numeric
Function?
@
Boolean
Usbundle
Your
answer:
Final
Examination
—
Spring
AY2022/23
Page
10
of
12
Purdue
email
1D:
29.
The
figure
below shows
3
bit
R2R
DAC.
If
Vce=3.3V,
R=11k
then
compute
the
device
range
and
the
output
voltage
when
Q2Q1Q0=101.
2R
R
R
IOllt
+Vout
-
loo
=
o.05mA
Oo
|
=9
0,0126
A
0.
o6rs
mA
Q2
b3
22
e
N
0-3V
or
3V
l.375v
Your
answer
(the
device
range):
Your
answer
(Vou
when
Q2Q1Q0=101):
30.
Points
are
sampled
digital
data,
and
the
solid
curve
is
the
digitized
voltage
signal
in
time.
What
is
the
signal
frequency
(f)
and
sampling
frequency
(fs)?
V(t)
1000
0.0000
3072
0.0167
1024
0.0333
3072
0.0500
1024
0.0667
3072
0.0833
1024
0.1000
3072
0.1167
1024
0.1333
3072
0.1500
1024
O
(4
3”"0
Time
(s)
,;b
Hg
o
189
.15
Hg
Your
answer
(f)
:
Your
answer
(fs):
fl
.
f
'
”‘
éo
‘13
--END
OF
PAPER---
Final
Examination
—
Spring
AY2022/23
.
Page
11
of
12
--
Appendix---
Thermocouple
Tables
The
following
tables
give
the
output
voltage
of
several
thermocouple
(TC)
types
over
a
range
of
temperature
in
5°C
increments.
In
each
case,
the
TCreferencetemperature
is
0°C.
The
first-
named
material
will
be
the
positive
terminal,
as
iron-constantan;
the
iron
will
be
the
positive
lead
when
the
refereiice
temperature
is
lower
than
the
measurement.
The
temperature
is
in
°C,
andthe
output
is
mV.
Each
column
is
in
5°C
increments
from
the
temperature
of
that
row.
TYPE
J:
IRON-CONSTANTAN
0
5
10
15
20
25
30
35
40
-
45
-150
-650
-666
-682
-697
-7.12
-727
~740
-754
-7.66
-778
—100
-463
-483
-503
-523
-542
=561
-580
-598
-616
-633
=50
-243
-266
-289
-3J2
-—334
-356
-3.78
-400
421
-442
-0
000
-025
-050
-075
-1.00
-124
~-148
-172
-196
-220
+0
000
025
0.50
0.76
1.02
1.28
1.54
1.80
2.06
232
50
258
285
311
3.38
3.65
3.92
4.19
4.46
4.73
5.00
100
527
5.54
5.84
6.08
6.36
6.63
6.90
7.18
745
7.3
150
8.00
828
8.56
8.84
9.11
939
967
995
1022
10.50
200
1078
1106
1134
1162
11.89
1217
1245
1273
1301
1328
250
1356
13.84
1402
1439
1467
1494
1522
1550
1577
1605
300
1633
1660
1688
17.15
1743
1771
1798
1826
1854
1881
350
1909
1937
1964
1992
2020
2047
2075
2102
2130
2157
400
21.85
2203
2240
2268
2295
2323
2350
2378
2406
2433
450
24,61
2488
2516
2544
2572
2599
2627
2655
2683
2711
500
2739
2767
2795
2823
2852
2880
2908
2937
2965
2994
550
3022
3051
3080
3108
3137
3166
3195
3224
3253
3282
600
3311
3341
3370
3399
3429
3458
3488
3518
3548
3578
650
3608
3638
3669
3699
3730
37.60
3791
3822
3853
3884
700
39.15
3947
3978
4010
4041
4073
4105
4136
4168
42.00
Final
Examination
—
Spring
AY2022/23
Page
12 0f
12
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