Page 1
ELTECH 113 Lecture (Quiz #6, Take-Home)
Date due : Monday (10-7-2002, 5 :30 pm)
Instructor : Bret Allen
Instructions : Select the best possible answer to each of the following (22)
multiple-choice questions :
1.
A rectifier is used to convert :
a . ac to ac
ac to do
c . do to ac
d . do to do
2.
How long will it take a transmitted electromagnetic (radio) wave to
reach a receiving antenna 1,000 miles away?
aQ 5 .38 ms
b . 10 .8 ms
G
.fi
5 . 38m
c . 53 .8 ms
000 M_1..1
d . 108 ms
Sf
3.
s
The magnitude of an alternation which varies from zero is called its :
a . altitude
amplitude
c . attitude
d . polarity
4.
Ac effective voltage is named :
a . average
b . peak
c . peak-to-peak
..` ® root mean square
5.
If
--OW
b.
c.
d.
6.
two sine waves are in phase, then they have a phase angle of :
0 degrees
45 degrees
90 degrees
180 degrees
A rectangular wave that has a duty cycle of 50 percent could be called
a:
a . c wave
b . sawtooth wave
square wave
d . triangle wave
ELTECH 113 Lecture (Quiz #6, 22-Multiple Choice Questions)
Page 2
7.
8.
What is the average voltage when a rectangular wave's base line voltage
is 20 V, its peak-to-peak voltage is 50 V, and it has a duty cycle of
20%-?
a . 26 V
tM 30 V
c . 40 V
d . 45 V
The rise time for a pulse wave is determined from which percentage of
its full amplitude?
a . 0 to 50 percent
b . 0 to 100 percent
c . 5 to 95 percent
10 to 90 percent
9.
Which "domain" analysis does a spectrum analyzer display?
---a® frequency
b . pulse
c . sine
d . time
What is the method of representing a waveform by plotting its amplitude
against time called?
a . frequency domain analysis
b . pulse slope rate
c . fundamental frequency development
-~ ® time domain analysis
10 .
11 . Most ac meters are internally calibrated to indicate which ac values?
a . average
b . peak
c . peak to peak
--,~ RMS
12 . What is the wave form period of a square wave signal that horizontally
covers 3 major divisions per cycle? (time/cm = 50 ms)
a . 50 ms
b . 100 ms
150 ms
d . 200 ms
13 . What is the name of a device used to directly measure the frequency of a
periodic wave?
a . oscilloscope
© frequency meter or counter
c . audio frequency generator
d . radio frequency generator
ELTECH 113 Lecture (Quiz #6, 22-Multiple Choice Questions)
Page 3
14 . The best aid for troubleshooting is :
test equipment
b . good documentation
c . extra replacement boards
d . replacement components
15 . What is the amplitude of the sign wave?
1 volt
b . 2 volts
c . lkhz
d . 1 ms
-->Q
0scilloscope-XS Cl
123 .3ms
T1
1000 .0mv
VAt
VB1
Timebase
Scale 500~slbiv
DC position
0 .0
YIT Add BIA AIB
xf
T2
VA2
124.8ms
1000 .0MV
VB2
Channel A
T2-T1
VA2.VAI
\,S2-WI
Reverse
Save
1 .5ms
2 .0 V
Channel B
Scale 500 m1A'Div
Scale 5 VYDiv
Y position 0 .0
Y position 0 .0
f' _AC 0 D C _j C`
DC
2d 2J
Ground
Trigger
C`
Edge
Level
V
Sing
_. Nor. Auto
B
FA __Pd
ELTECH 113 Lecture (Quiz #6, 22-Multiple Choice Questions)
Page 4
16 .
What is the peak-to-peak voltage of the ac sine wave?
a . 36 .03 volts
b . 40 .3 volts
c . 57 volts
114 volts
0 scilloscope-XS Ci
Ti
VA1
VBi
32 .3ms
57 .0 V
T2
VA2
VE2
32 .8ms
57 .0 V
T2-T1
Scale 50DpsIDiv
Scale 2D VYDiv
Scale
Y position 0.0
Y position
YIT Add BIA AIB
ELTECH 113 Lecture
DC
I`
AlC
Edge
5 VIDiv
0
(Quiz #6,
Groun
Trigger
Channel B
X position
0.0
114 .0 V
W2-VV
Channel A
Timebase
Reverse
Save
600 .O1as
VA2-VA1
Level
0.0
DC
C`
FV
Sing . Mor. Auto
IT g p(f
22-Multiple Choice Questions)
Page 5
17 .
What is the RMS value of the ac sine wave?
a . 76 .4 volts
84 .8 volts
c . 120 volts
d . 240 volts
Oscilloscope-XSC1
T1
[ 9.3ms
120.0 V
VAt
W1
Timebase
Scale 500 I ;IDiv
H position
0.0
YIT Add BIA _
:!+B
T2
VA2
VB2
~
.._
1DArns
-120 .0 V
Channel A
Reverse
Save
Channel l)
Scale 50 \#o --v
Y position 0.0
±EJ -~J
1 .5ms
.240 .0 V
T2-T1
VA2.VA1
V92-VB 1
DC
Y position
C`
VR
±L0
41
s
C71'OUn
Trigger
5 VIDiv
Scale
.
C
Edge
Level
0.0
DC
Fo -
ing. Nor. Auto
-.J I-
V
r
FA B E?CT
( , 7-7)
o-7)
ELTECH 113 Lecture
(Quiz #6,
22-Multiple Choice Questions)
Page 6
18 . What is the frequency of the ac sine wave?
a . 2000 Hz
+
500 Hz
c . 400 Hz
d . 100 Hz
oscdloscope-xscl
500.Ops
120.0 V
T1
VA1
'Al
2.5ms
120.0 V
T2
VA2
VB2
Timebase
Ground
Channel A
Channel B
Trigger
Scale 500 pslDiv
Scale 50 \#Div
Scale 5 VIDiv
H position
Y position 0 .0
Y position
I
0 .0
FYI-f' Add BIAI NB
I
AC
I
0
I
DC
(-
C
I
O
Edge
0.0
DC
Level
-I(-
FV
inglNor. Auto
A B EXT
ELTECH 113 Lecture (Quiz #6, 22-Multiple Choice Questions)
Page 7
19 .
What is the phase angle?
a . 9°
rear34Fw.. 51 .14+t
b . 18°
c . 27 °
Q4-r ~'
FeOAS
d . 36 °
MTEO
0scilloscope--XS C7
T1
VA1
VB1
-J
3.Oms
OrnS
300.0mv
Timebase
VA2
VB2
3 .1ms
.620.gmV
-1 .5mv
Channel A
Scale 20D 1,rslDiv
M position
T2
0.0
YIT Add BIA LB
Y position 0 .0
~
-2J
VA2-VA1
VB2-VB1
Channel l)
Scale 5D0 m1A'Div
DC
f'
Scale
0
Save
Gron
Trigger
500 mVIDiv
Edge
0.0
Level
Y position
AC
Reverse
10D.51,~c
812.7mV
-310 .5mV
T2-T1
DC
-.J
F
fSing . Nor.
Auto
V
FA -B-L
DtJ
ELTECH 113 Lecture (Quiz #6, 22-Multiple Choice Questions)
Page 8
20 .
What is the rise time?
a . 1 ns
b . 900 ps
800 ps
700 ps
Oscilloscope-XSCl
... .. .. .. .............................
T1
VA1
VB1
Timebase
1D6 .7ps
533 .3mv
Scale 1 ns/Div
X position
[TIT Add
o .o
T2
VA2
g22 .gps
VA2.VA1
VB2
Channel A
VB2-VB1
Channel B
Scale 2 \,YDiv
Y position o .o
BlA fi1B
ELTECH 113 Lecture
DC
818 .2ps
T2-Ti
4.B V
Scale
f
555 mV#Div
Y position U .o
AC D DC J 1-
(Quiz #6,
Reverse
Save
4.1 V
r.
Ground
Trigger
Edge
Level
F V
ing . Nor . Put- FA B fT
22-Multiple Choice Questions)
Page 9
21 .
What is the peak-to-peak voltage of the ac sine wave?
a . 17 .4 volts
b . 19 .4 volts
27 .4 volts
54 .8 volts
0scilloscope-XS C2
Ti
5.gms
-27.4 V
VA1
V91
Timebase
T2
VA2
VH2
8.7ms
6.7 V
W2-A) 1
Channel B
Scale 100 plDiv
Scale 20 VDiv
Y postion 0.0
0.0
dc
BIA AIB
a -7 . y
(1) =
ELTECH 113 Lecture
Scale
C`
Trigger
F
5\#D.Y postion 0.0
AC
0
Reverse
Save
855.Ops
34.1 V
VA2-VA1
Channel A
Xposition
YIT Add
T2-T1
DC
J C`
Edge
Level
FA
.
r
Groun
-11
FV
Sing . Nor. Auto ~ B
r
ff
5 y. s v
(Quiz #6,
22-Multiple Choice Questions)
Page 10
22 . What
a . 311
b . 346
c . 489
d . 978
s the RMS value of the ac sine wave?
volts
V+90
volts
volts
av2,b (RN5WEA
volts
Oscilloscope-XS C2
TI
VA1
b81
8.1ms
877.8 V
-
T2
VA2
IA2
8.8ms
959.9 V
Ch nnel A
Timebase
[
T2-T1
VA2-VA1
VB2-\+E1
Channel B
Scale 100 p/Div
Scale 500 \#Div
Scale
3C position
Y position 0.0
Y position
0.0
YIT Add BIA _!!B
±~J
0
J
Dc
r` ±LLo
Reverse
737.5Ns
1 .9 kV
Save
Groun
Trigger
Edge
51A'Div
Level
0.0
Dc
-,J
C'
FV
FA_BEKT
Sing. Nor. Auto
ELTECH 113 Lecture (Quiz #6, 22-Multiple Choice Questions)
-END OF QUIZ-
-T"
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