True/False
Indicate whether the sentence or statement is true
or false.
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1.
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The
electrical system shown in the figure above is a closed system.
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2.
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A
transformer changes the amount of power in a closed system.
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3.
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All
power strips have surge protection.
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4.
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In
most troubleshooting situations, you will measure current, not voltage.
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5.
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If
you add a new hard drive to your computer, and it and the existing floppy drive each work
independently, but data errors occur when both are working at the same time, suspect a shortage of
electrical power.
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6.
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Devices that are Energy Star compliant go into a sleep mode in which they use less
than 30 watts of power.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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7.
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Electricity can be thought of as a stream of tiny charged ____ that flow like water
along a path. a. | amperes | c. | electrons | b. | volts | d. | watts | | | | |
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8.
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Which
of the following statements is false? a. | The resistance of a device is measured when the device is
connected to an electrical system. | b. | Watts are calculated by multiplying volts by
amps. | c. | Voltage is measured when the power is
on. | d. | None of the
above. | | |
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9.
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A
condition of low resistance that allows current to flow in a completed circuit is called
____. a. | clamping
voltage | c. | suspend
time | b. | continuity | d. | potential
difference | | | | |
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10.
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As
the electrical resistance increases, ____. a. | the flow of electrons decreases | c. | Either A or B. | b. | the flow of
electrons increases | d. | Neither A nor
B. | | | | |
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11.
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An
electrical circuit is created by all except ____. a. | voltage | c. | resistance | b. | current | d. | continuity | | | | |
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12.
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A
computer power supply functions as a ____. a. | transformer | c. | supplier | b. | rectifier | d. | Both A and
B. | | | | |
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13.
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When
AC comes from the power source at the power station to your house, it travels on a(n) ____
line. a. | hot | c. | AC | b. | neutral | d. | ground | | | | |
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14.
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In
PCs, ____ is generally used for the ground wire. a. | white | c. | orange | b. | green | d. | black | | | | |
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15.
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Gold
and copper are examples of ____. a. | semiconductors | c. | transducers | b. | insulators | d. | conductors | | | | |
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16.
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Silicon is an example of a(n) ____. a. | semiconductor | c. | transducer | b. | insulator | d. | conductor | | | | |
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17.
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Temporary reductions of voltage are called ____. a. | sinks | c. | brownouts | b. | depressions | d. | doze times | | | | |
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18.
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Which
provide backup power supply in the event that the AC fails completely? a. | surge
suppressors | c. | uninterruptible
power supplies | b. | power conditioners | d. | Both B and C. | | | | |
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19.
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____
is the most popular form factor. a. | Baby AT | c. | ATX | b. | Mini-ATX | d. | AT | | | | |
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20.
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One
problem with the ____ form factor is that the CPU is placed on the motherboard in front of the
expansion slots. a. | Baby
AT | c. | ATX | b. | Mini-ATX | d. | AT | | | | |
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21.
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A
riser card is found in ____ systems. a. | LPX | c. | ATX | b. | Mini-ATX | d. | Flex-ATX | | | | |
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22.
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The
temperature inside the computer case should not exceed ____ degrees F.
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23.
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____
is a power management method used with Windows 98 and Windows 2000/XP and supported by system
BIOS. a. | APM | c. | ACPI | b. | DPMS | d. | Both A and B. | | | | |
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24.
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The
____ CMOS setting is the time that elapses before the system reduces 80 percent of its power
consumption. a. | standby
time | c. | hang
time | b. | suspend
time | d. | doze
time | | | | |
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25.
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The
____ CMOS setting is the time before the system reduces 92 percent of its power
consumption. a. | standby
time | c. | hang
time | b. | suspend
time | d. | doze
time | | | | |
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26.
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The
"S" in DPMS stands for ____. a. | Signaling | c. | System | b. | Source | d. | Setup | | | | |
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Matching
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Match each correct item with the statement below. a. | volts | f. | transformer | b. | amps | g. | alternator | c. | ohms | h. | resistance | d. | watts | i. | rectifier | e. | potential
difference | j. | transistor | | | | |
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27.
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A
property in an electrical system that opposes the flow of electricity.
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28.
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Measure resistance.
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29.
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Changes the ratio of current to voltage.
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30.
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Can
serve as a gate for an electrical signal and can amplify the flow of electricity.
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31.
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Creates an electrical force which drives the electrons through the system between two
points.
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32.
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Used
to measure potential difference.
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