Quiz 7 Flashcards
The pressure of the electrons in a wire is measured in units called _______________.
a. ohms
b. watts
c. amperes
d. volts
d. volts
Which unit is used to measure current?
a. Watt
b. Volt
c. Ampere
d. Ohm
c. Ampere
Which unit is used to express the number of amps and volts needed by a particular device to function?
a. Ampere
b. Volt
c. Watt
d. Ohm
c. Watt
Which unit is used to measure resistance?
a. Watt
b. Ampere
c. Ohm
d. Joule
c. Ohm
What type of voltage does a PC use?
a. DC
b. Ground
c. AC
d. LC
a. DC
In an IEC-320 plug, which wire carries electrical voltage?
a. Ground
b. Hot
c. Earth
d. Neutral
b. Hot
Which type of wire carries no voltage?
a. Ground
b. Hot
c. Multimeter
d. Neutral
d. Neutral
A coworker is taking a computer overseas and asks you what concerns he should have. What do you tell him?
a. Prepare for the fact that his PC will not work overseas.
b. Make sure he switches the power supply to 230AC.
c. Make sure he switches the power supply to 115AC.
d. Rest assured that there are no issues with computer use overseas.
b. Make sure he switches the power supply to 230AC
What should be the outputs of the hot, neutral, and ground wires, respectively, when tested with a multimeter?
a. 0 V, 115 V, 2 V
b. 115 V, 0 V, 0 V
c. 112 V, 115 V, 0 V
d. 0 V, 115 V, 0 V
b. 115 V, 0 V, 0 V
How is DC voltage represented on multimeters?
a. V with a ~ above it
b. V with a dash below it
c. V with a solid line above a dashed line
d. V with a ~ below it
c. V with a solid line above a dashed line
A surge suppressor should have a rating of at least _______________.
a. 1449-V
b. 800-V
c. 330-V
d. 400-V
c. 330-V
What UL rating is preferred for a surge suppressor?
a. UL1449
b. UL497A
c. UL1497A
d. 1750 joules
a. UL1449
Large sags in electricity are also known as _______________.
a. brownouts
b. blackouts
c. surges
d. spikes
a. brownouts
What occurs when power cuts out completely?
a. Brownout
b. Blackout
c. Sag
d. Spike
b. Blackout
How should an electronic device be protected during an electrical storm?
a. Connect the device to a UPS.
b. Place the device in standby mode.
c. Unplug the device.
d. Connect the device to a surge suppressor.
c. Unplug the device
Power supplies come with a standard _______________ for the motherboard and interior devices.
a. connector
b. suppressor
c. pin
d. hole
a. connector
Modern motherboards use a 20- or 24-pin _______________.
a. P1
b. P4
c. P2
d. P3
a. P1
The standard modern power supply provides _______________ volts of power.
a. 6.0 and 12.0
b. 5.0 and 12.0
c. 12.0
d. 3.3, 5.0, and 12.0
d. 3.3, 5.0, and 12.0
Which connector is the most common type of connector used for devices that require 5 V or 12 V of power?
a. P4 12 V
b. Molex
c. P1
d. sub-mini connector
b. Molex
The largely extinct 3.5-inch floppy disk drive uses the _______________ connector.
a. P1
b. Molex
c. P4 12V
d. mini
d. mini
Mini connectors (Berg connectors) are used for _______________ power.
a. AC
b. peripheral
c. central
d. backup
b. peripheral
Most case fans have standard _______________ connectors that are easy to plug in but can be forced to be connected the wrong way.
a. micro
b. mini
c. Molex
d. sub-mini
c. Molex
The notches that guide installation in the Molex connector are called _______________.
a. channels
b. chamfers
c. ports
d. sockets
b. chamfers
Modern power supplies have multiple _______________.
a. connectors
b. fuses
c. fans
d. voltage selectors
a. connectors
What type of power connector is L-shaped?
a. SATA
b. P1
c. Molex
d. Mini
a. SATA
Which tool uses the soft power feature?
a. Molex power supply
b. SATA connectors
c. ATX
d. AT
c. ATX
Which power supply never turns off?
a. P8, P9
b. P1
c. AT
d. ATX
d. ATX
Which industry group came up with a non-ATX standard motherboard and power supply called EPS12V?
a. Hardware System Infrastructure
b. Server System Infrastructure
c. Software System Infrastructure
d. Server Power Infrastructure
b. Server System Infrastructure
The _______________ power supply has a 24-pin main motherboard that resembles a 20-pin ATX connector.
a. EPS12V
b. mini
c. Molex
d. P421V
a. EPS12V
Which is the latest ATX power supply standard?
a. EPS12V
b. ATX12V 2.0
c. ATX12V 3.0
d. ATX12V 1.3
b. ATX12V 2.0
In the past, how much power was supplied by power supplies with 12-V rails?
a. 18 amps
b. 30 amps
c. 3 amps
d. 81 amps
a. 18 amps
How many watts of power does a typical hard drive in a PC require?
a. 15
b. 20
c. 25
d. 10
a. 15
How many watts of power does an Intel i7-4790K require at peak performance?
a. 101
b. 151
c. 200
d. 50
b. 151
A(n) _______________ power supply smooths out power coming from the wall before passing it to the main power supply circuits, which eliminates harmonics.
a. UPS
b. SPS
c. Active PFC
d. EPS 12V
c. Active PFC
Power supplies are rated for efficiency based on _______________ drawn to supply sufficient power to the PC.
a. volts
b. watts
c. amperes
d. ohms
b. watts
Empty expansion bays must be covered by a _______________ to maintain proper airflow inside the case.
a. slot cover
b. case cover
c. case sheath
d. slot lid
a. slot cover
Which statement is true of computer cases?
a. Small cases do not require cooling.
b. An open case lowers cooling efficiency.
c. Large cases do not require cooling.
d. An open case allows for better cooling.
b. An open case lowers cooling efficiency.
A PC does not work. What should you check first?
a. The tower supply voltages
b. Whether the DC plug is plugged in
c. Whether the AC plug is plugged in
d. The 12 V power supply
c. Whether the AC plug is plugged in
What class of fire extinguisher should be used on an electrical fire?
a. Class A
b. Class B
c. Class C
d. Class D
c. Class C
If a power supply is smoking or heating up, what is the best action to take?
a. Stop using it and replace it immediately.
b. Replace the power supply fan.
c. Switch the voltage from 110 to 220.
d. Replace the fuse.
a. Stop using it and replace it immediately.
