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ELTECH 113 Lecture (Ouiz #1, In Class)
Date : Thursday, 8-29-2002 (5 :30 pm - 6 :45 pm)
Instructor : Bret Allen
Instructions : Select the best possible answer from each of the following
thirty-five (35) multiple choice questions :
1.
The smallest particle into which an element can be divided without
losing its identity is the :
atom
b . molecule
c . neutron
. proton
2 .
A negative charged particle of an atom is the :
electron
b . molecule
c . neutron
d . proton
The like charges of two electrons will cause them to :
a . attract
repel
c . neither attract nor repel
d . cannot tell
What is the most commonly used conductor in electronics?
a . aluminum
copper
gold
d . silver
5 .
Electrical current is defined as the movement of which subatomic
particles?
electrons
b . molecules
c . neutrons
d . protons
6.
Current equals :
coulombs/time
b . coulombs x time
c . voltage/time
d . voltage x time
ELTECH 113 Lecture
(Quiz #1,
35-Multiple Choice Questions)
Page 2
7.
8.
The earliest electrical researchers believed that current flowed from a
positive potential to a negative potential . This type of current flow i
_
now called :
a . conductance
conventional
. electron
d . voltage
Electromotive force (emf) is measured in :
a . amps
b . coulombs
0 volts
d . watts
9.
If a fluid system is compared to an electrical system, the fluid pump
will correspond to a :
battery
b . conductor
c . current
d . lamp
10 .
If an electrical system is compared to a fluid system, then electrical
current corresponds to the :
a . pressure
b . pump
water flow
d . water wheel
11 .
A burned out
. a short in
an open in
. a short in
d . an open in
lamp
the
the
the
the
filament will cause :
lamp
lamp
fuse
fuse
12 . When an electronic component fails due to a short circuit, the event
will cause :
-, an increase in current
b . a decrease in current
c . the current to stop flowing
d . no change in the current flow
13 .
If an electronic component fails by developing an open circuit, the
current will :
a . increase
b . decrease
cease
d . not change
ELTECH 113 Lecture (Quiz #1, 35-Multiple Choice Questions)
Page 3
14 . A circuit in which current is flowing is considered :
>O closed
b . open
c . shorted
d . disconnected
15 .
An
a.
b.
--:>Q
d.
open circuit may be caused by a :
closed switch
shorted component
blown fuse
solder bridge
16 .
The Battery symbol is :
a. I
-->(E) I I
c . III
d . IV
T
If
in
b.
c.
d.
ti
circuit resistance decreases from 10 ohms to 8 ohms, then the current
the circuit will :
increase
decrease
remain the same
cannot tell
.a ,..
18 . Which of the following formulas is a form of ohm's law?
a . V = I /R
b. I
R/V
R = V/I
d . V = R/I
T
ELTECH 113 Lecture (Quiz #1, 35-Multiple Choice Questions)
Page 4
19 .
If resistor voltage is 3 V with 0 .1 A flowing through it, what is the
resistor value?
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IC
- a . 0 . 03 ohms
b . 0 .3 ohms
c . 3 .0 ohms
3V _
30 ohms
T
V=
->(D
r
3v-D-
A
20 . What electromotive force would cause 20 A of current to flow through a
500 ohm resistor?
a . 0 .04 V
A
b . 2 .5 V
c . 25 .0 V
--~ ® 10, 000 V
k10 C. 7- S
V ~. /~, O va
How much current will flow through a 1 k ohm resistor, when it is
connected to a 1 .5 V battery?
-~ aO. 1 . 5 mA
b . 666 mA
c . 666 A
d . 1 .5 kA
21 .
The rate at which work is performed is called :
a . current
b . energy
--><Z) power
d . voltage
22 .
How much power does a resistor dissipate when a 9 V battery causes 2 A ' of current to flow through it?
a . 0 .22 W
(~ V )
b . 4 .5 W
)
--.b'~ 18 W
d . 40 .5 w
23 .
^
24 .
25 .
8
How much current does a 1 .5 kW, 120 V heater use?
a . 5 .56 ~tA
b . 80 MA
12 . 5 A
d . 180 kA
-j- -'
v
ra~ v
How many ohms of resistance would a 120 V, 200 W lamp filament have?
a . 0 .6 ohms
b_ 1 .67 ohms
72 .0 ohms
d . 333 ohms
6 070V)
_
ELTECH 113 Lecture (Quiz #1, 35-Multiple Choice Questions)
7 d, o
Page 5
26 .
What is the current flowing in this circuit?
a . 3 .3 mA
® 0 .33 mA
c . 33 .3 uA
~ _
- d . 3 . 3 ~tA
._-h--
eD, 33 m A
V1
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D a3 1/ ^ , eDv033 .~
23mV
R1 ~ 690hm
27 . What is the battery voltage?
a. 1 V
Q 0. 1 V
10 mV
d . 1 mV
690hm
28 .
=
0 - -Z
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What is the power dissipated by the light bulb?
250 W
b . 25 W
c . 2 .5 W
d . 250 mW
ELTECH 113 Lecture (Quiz #l, 35-Multiple Choice Questions)
Page 6
29 .
What is wrong with this circuit?
a . Nothing .
b . Rl is open .
Rl is shorted .
d . Battery is dead .
3 .3k Oh m
30 . Which of the following is a voltage source?
--->a© battery
b . 1 amp
c . resistor
d . ground
31 .
Like poles of two magnets will :
a . attract
repel
neither attract nor repel
demagnetize
32 .
A good fuse will measure :
zero ohms resistance
b . a medium resistance
c . a high resistance
d . infinite resistance
33 .
A circuit breaker can be used to replace a :
a . battery
fuse
c . relay
d . thermocouple
ELTECH 113 Lecture (Quiz #1, 35-Multiple Choice Questions)
Page 7
34 .
'
If the battery will last for 256 hours, what is the battery amp-hour
rating?
a . 420 amp-hours
b . 920 amp-hours
T _ _5
c.. 1420 amp-hours
1-92 0 amp-hours
5
f
1 P-
s5 A
V1
75V
1 C 100hm
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35 . What
a. 1
b. 3
5
d. 7
7E,
? 5-4;
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is the minimum value of the fuse?
amp
amp
amp
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amp
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s
U1
TS
R1
260h m
5 :
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=
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ELTECH 113 Lecture (Quiz #1, 35-Multiple Choice Questions)
-END OF QUIZ #1-
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