True/False
Indicate whether the sentence or statement is true
or false.
|
|
|
1.
|
A
transformer is a device that converts alternating current to direct current.
|
|
|
2.
|
A
transistor is an electronic device that can serve as a gate or switch for an electrical signal and
can amplify the flow of electricity.
|
|
|
3.
|
A
monitor can discharge as much as 80,000 volts onto the screen and damage expansion cards if they are
stored next to the monitor.
|
|
|
4.
|
Temporary voltage reductions are brownouts.
|
|
|
5.
|
The
form factor describes the size, shape, and general makeup of a hardware component.
|
|
|
6.
|
The
AT form factor is used on smaller motherboards.
|
|
|
7.
|
Use
cold air to remove dust from the power supply and the vents over the entire computer.
|
|
|
8.
|
Doze
time is the time that elapses before the system reduces 80 percent of its power
consumption.
|
|
|
9.
|
A
faulty power supply can cause memory errors, data errors, system hangs, or reboots.
|
|
|
10.
|
A
computer power supply is rated at 300 to 500 W.
|
Modified True/False
Indicate
whether the sentence or statement is true or false. If false, change the identified word or
phrase to make the sentence or statement true.
|
|
|
11.
|
Alternating current travels in only one direction and is the type of current
that most electronic devices require. _________________________
|
|
|
12.
|
A(n)
short circuit occurs when uncontrolled electricity flows from the hot line to the neutral line
or from the hot line to the ground. _________________________
|
|
|
13.
|
A(n)
resistor is the basic building block of an integrated circuit (IC), which is used to build a
microchip. _________________________
|
|
|
14.
|
When
two objects with dissimilar electrical charges touch, static electricity passes between them until
dissimilar charges become divergent. _________________________
|
|
|
15.
|
A(n)
surge protector provides a row of power outlets and an on/off switch that protects equipment
from overvoltages on AC power lines and telephone lines. _________________________
|
|
|
16.
|
Power
supplies designed for the Baby AT form factor blow dust out of the computer case.
_________________________
|
|
|
17.
|
Midsize towers can also be called midtowers.
_________________________
|
|
|
18.
|
Line conditioners level the AC to reduce brownouts and spikes.
_________________________
|
|
|
19.
|
The
most popular case type in use today is the slimline desktop.
_________________________
|
|
|
20.
|
To
reduce energy consumption, the U. S. Environmental Protection Agency has established Energy
Star standards for electronic devices. _________________________
|
Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
|
|
|
21.
|
____
serves as an escape route for out-of-control electricity. a. | Grounding | c. | Power
Station | b. | Fuse | d. | Current | | | | |
|
|
|
22.
|
To
verify that a wall outlet is wired correctly, use a(n) ____ to verify the hot, neutral, and ground
wires. a. | ohm
meter | c. | transistor | b. | multimeter | d. | receptacle tester | | | | |
|
|
|
23.
|
____
are materials that easily conduct electricity, such as gold or copper. a. | Insulators
| c. | Semiconductors | b. | Conductors | d. | Transistors | | | | |
|
|
|
24.
|
____ are materials such as silicon that have the ability to conduct electricity
when a charge is applied to them. a. | Insulators | c. | Semiconductors | b. | Conductors | d. | Transistors | | | | |
|
|
|
25.
|
____
are materials that resist the flow of electricity, such as glass or ceramic. a. | Insulators | c. | Semiconductors | b. | Conductors | d. | Transistors | | | | |
|
|
|
26.
|
A
____ is an electronic device that limits the amount of current that can flow through
it. a. | diode | c. | capacitor | b. | resistor | d. | transistor | | | | |
|
|
|
27.
|
What
are the three general categories of devices that filter the AC input to computers and their
peripherals and provide backup power when the AC fails? a. | data line
protectors, current conditioners, and uninterruptible power supplies | b. | surge
protectors, power conditioners, and interruptible power supplies | c. | line
conditioners, line-interactive UPS, and interruptible power supplies | d. | surge
suppressors, power conditioners, and uninterruptible power supplies | | |
|
|
|
28.
|
A
____ is measured by clamping voltage. a. | power supply | c. | suppressor | b. | conditioner | d. | protector | | | | |
|
|
|
29.
|
____
regulate or condition the power by providing continuous voltage during brownouts. a. | Data line
protectors | c. | Surge
suppressor | b. | Power conditioners | d. | UPSs | | | | |
|
|
|
30.
|
The
____ provides backup power in the event that the AC fails completely. a. | surge
suppressor | c. | uninterruptible
power supply | b. | data line protector | d. | power conditioner | | | | |
|
|
|
31.
|
The
AT board uses two power connections, the ____ and the ____. a. | P3 connector, P4
connector | c. | P1 connector, P2
connector | b. | P6 connector, P7 connector | d. | P8 connector, P9 connector | | | | |
|
|
|
32.
|
The
CPU on the AT motherboard sits ____ of the expansion slots. a. | in back
| c. | in front
| b. | to the left
| d. | to the
right | | | | |
|
|
|
33.
|
____
is an open, nonproprietary industry specification originally developed by Intel in
1995. a. | AT form
factor | c. | LPX form
factor | b. | NLX form factor | d. | ATX form factor | | | | |
|
|
|
34.
|
On an
ATX motherboard, the CPU and memory slots are rotated ____ degrees from the position on the AT
motherboard.
|
|
|
35.
|
Cases
designed for ____ cannot accommodate ATX motherboards and power supplies. a. | Baby AT and
LPX | c. | AT and
NLX | b. | AT and
LPX | d. | Baby AT and
NLX | | | | |
|
|
|
36.
|
Which
form factor has a riser card, is difficult to upgrade, and is used in low-cost systems sold in large
electronic stores? a. | NLX | c. | Backplane | b. | AT | d. | LPX | | | | |
|
|
|
37.
|
Which
form factor is for low-end personal computer motherboards, has one expansion slot, and is used with
low-profile cases? a. | NLX | c. | Backplane | b. | AT | d. | LPX | | | | |
|
|
|
38.
|
A
tower case can be as high as ____ feet and has room for several drives. a. | two | c. | four
| b. | three | d. | five | | | | |
|
|
|
39.
|
For
an ATX power supply, the ____ must be connected to the motherboard before power will come
on. a. | EMF | c. | PWR.SW | b. | remote switch wire | d. | power cord | | | | |
|
|
|
40.
|
The
temperature inside the case should NOT exceed ____ degrees.
|
|
|
41.
|
An
overheated system can cause ____ problems. a. | long-term | c. | no | b. | detrimental | d. | intermittent | | | | |
|
|
|
42.
|
____
sets the number of minutes of inactivity that must pass before the CPU goes into sleep
mode. a. | Green timer on
the motherboard | c. | Standby
time | b. | Doze
time | d. | Suspend
time | | | | |
|
|
|
43.
|
Which
unit measures the potential difference in a circuit?
|
|
|
44.
|
Which
unit measures resistance?
|
|
|
45.
|
A
____ is a component included in a circuit designed to prevent too much current from flowing through
the circuit. a. | watt | c. | conductor | b. | fuse | d. | insulator | | | | |
|
|
|
46.
|
____
is the most economical way to transmit electricity to our homes and workplaces.
|
|
|
47.
|
The
____ is the basic building block of an integrated circuit. a. | capacitor | c. | transistor | b. | diode | d. | resistor | | | | |
|
|
|
48.
|
____
maintain their charge long after current is no longer present. a. | Capacitors | c. | Resistors | b. | Diodes | d. | Transformers | | | | |
|
|
|
49.
|
The
most common accident when someone attempts to fix a computer problem is ____. a. | EMI | b. | erasing software | c. | bending pins on
the motherboard | d. | dropping screws into moving
components | | |
|
|
|
50.
|
A
____ contains a resistor that prevents electricity from harming you. a. | ground
mat | c. | ground
bracelet | b. | static shielding bag | d. | motherboard | | | | |
|
|
|
51.
|
Don’t work on a computer if you or the computer have just come from the ____,
because the potential for ESD is higher. a. | cold | c. | outside | b. | sun | d. | heat | | | | |
|
|
|
52.
|
Data
in data cables that cross an electromagnetic field can become corrupted, causing
____. a. | data to be
erased | c. | ESD | b. | crosstalk | d. | RFI | | | | |
|
|
|
53.
|
House
current in the United States oscillates ____ times in one second.
|
|
|
54.
|
____
are highly proprietary, conserve space, use less power, and produce less heat. a. | Slimline
desktops | c. | Notebooks | b. | Minitowers | d. | Towers | | | | |
|
|
|
55.
|
The
ATX power supply and motherboard use a single power connector called the ____. a. | ATX
connector | c. | P3
connector | b. | CPU connector | d. | P1 connector | | | | |
|
Yes/No
Indicate whether you agree with the sentence or
statement.
|
|
|
56.
|
Is a
transformer a device that changes the ratio of current to voltage?
|
|
|
57.
|
Are
the basic electronic components in a PC transistors, rectifiers, capacitors, transformers, and
diodes?
|
|
|
58.
|
Is a
capacitor a semiconductor device that allows electricity to flow in only one direction?
|
|
|
59.
|
Are
temporary voltage surges called spikes?
|
|
|
60.
|
Is
the most popular form factor AT?
|
|
|
61.
|
Can
the position of the power supply in an ATX case help reduce the potential for EMI and corrupted
data?
|
|
|
62.
|
Are
compact cases also called low-profile or slimline cases?
|
|
|
63.
|
Is
sleep time the time that elapses before the system reduces 92 percent of its power
consumption?
|
|
|
64.
|
Are
the two kinds of UPSs true UPS and the standby UPS?
|
|
|
65.
|
Does
a CD-ROM drive uses about 3 A?
|
Completion
Complete each sentence or
statement.
|
|
|
66.
|
____________________ cycles, or oscillates, back and forth rather than traveling in
only one direction.
|
|
|
67.
|
When
two power lines reach your house and enter an electrical device, such as a lamp or radio,
____________________ flows through the device to complete the circuit between the hot line and the
neutral line.
|
|
|
68.
|
A(n)
____________________ is an electronic device that can hold an electrical charge for a period of time
and can smooth the uneven flow of electricity through a circuit.
|
|
|
69.
|
____________________ is commonly known as static electricity.
|
|
|
70.
|
____________________ is caused by the magnetic field produced as a side effect when
electricity flows.
|
|
|
71.
|
The
computer case, sometimes called the ____________________, houses the power supply, motherboard,
expansion cards, and drives.
|
|
|
72.
|
The
smallest notebook cases are called ____________________.
|
|
|
73.
|
____________________ is the time that elapses before the system reduces its power
consumption by 99 percent.
|
|
|
74.
|
A(n)
____________________ provides enough power to perform an orderly shutdown during a
blackout.
|
|
|
75.
|
____________________ are small surge suppressors designed to protect modems from
spikes on telephone lines.
|
Matching
|
|
|
Identify the letter of the choice that best matches the phrase or
definition. a. | insulators | f. | volt | b. | alternating current | g. | fuse | c. | diode | h. | resistor | d. | transformer | i. | rectifier | e. | amp | j. | electrostatic discharge | | | | |
|
|
|
76.
|
Device that converts alternating current to direct current
|
|
|
77.
|
Measures electrical current
|
|
|
78.
|
Electrical charge at rest
|
|
|
79.
|
Component included in a circuit and designed to prevent too much current from flowing
through the circuit
|
|
|
80.
|
Electronic device that limits the amount of current that can flow through
it
|
|
|
81.
|
Semiconductor device that allows electricity to flow in only one
direction
|
|
|
82.
|
Cycles, or oscillates, back and forth rather than traveling in only one
direction
|
|
|
83.
|
Device that changes the ratio of current to voltage
|
|
|
84.
|
Materials that resist the flow of electricity
|
|
|
85.
|
Unit
that measures the potential difference in a circuit
|
Short Answer
|
|
|
86.
|
What
does “grounding a line” mean?
|
|
|
87.
|
In a
110-volt circuit and 220-volt circuit, what are the colors and meaning of the wires?
|
|
|
88.
|
ESD
can cause two types of damage in an electronic component. What are they? Explain
each.
|
|
|
89.
|
What
do the letters UPS stand for? What kind of benefits does the UPS offer?
|
|
|
90.
|
Describe the number and placement of fans in an ATX case.
|
|
|
91.
|
What
are backplane systems? Explain both active and passive backplanes.
|
|
|
92.
|
Troubleshooting a PC problem begins with isolating it into one of two
categories. Name them.
|
|
|
93.
|
Explain what the soft switch on an ATX machine is for.
|
|
|
94.
|
What
is the difference between the desktop case, tower case, and notebook case?
|
|
|
95.
|
Describe how you would examine the motherboard looking for evidence of a short
circuit.
|