Deck 8: Power Supplies

Question 1

Modern motherboards use a 20- or 24-pin _______________.

A)P1
B)P2
C)P3
D)P4

Answer 1

A

Question 2

Large sags in electricity are also known as _______________.

A)brownouts
B)blackouts
C)spikes
D)surges

Answer 2

A

Question 3

How should an electronic device be protected during an electrical storm?

A)Place the device in standby mode.
B)Connect the device to a surge suppressor.
C)Connect the device to a UPS.
D)Unplug the device.

Answer 3

D

Question 4

A surge suppressor should have a rating of at least _______________.

A)330-V
B)400-V
C)800-V
D)1449-V

Question 5

Which connector is the most common type of connector used for devices that require 5 V or 12 V of power?

A)Molex
B)P1
C)P4 12 V
D)sub-mini connector

Question 6

A coworker is taking a computer overseas and asks you what concerns he should have.What do you tell him?

A)Rest assured that there are no issues with computer use overseas.
B)Prepare for the fact that his PC will not work overseas.
C)Make sure he switches the power supply to 230AC.
D)Make sure he switches the power supply to 115AC.

Question 7

What should be the outputs of the hot, neutral, and ground wires, respectively, when tested with a multimeter?

A)0 V, 115 V, 0 V
B)0 V, 115 V, 2 V
C)112 V, 115 V, 0 V
D)115 V, 0 V, 0 V

Question 8

The largely extinct 3.5-inch floppy disk drive uses the _______________ connector.

A)Molex
B)mini
C)P1
D)P4 12V

Question 9

Which unit is used to express the number of amps and volts needed by a particular device to function?

A)Ampere
B)Ohm
C)Volt
D)Watt

Question 10

The standard modern power supply provides _______________ volts of power.

A)3.3, 5.0, and 12.0
B)5.0 and 12.0
C)6.0 and 12.0
D)12.0

Question 11

What occurs when power cuts out completely?

A)Sag
B)Brownout
C)Blackout
D)Spike

Question 12

How is DC voltage represented on multimeters?

A)V with a ~ below it
B)V with a dash below it
C)V with a ~ above it
D)V with a solid line above a dashed line

Question 13

Power supplies come with a standard _______________ for the motherboard and interior devices.

A)connector
B)hole
C)pin
D)suppressor

Question 14

Which unit is used to measure voltage?

A)Ampere
B)Volt
C)Watt
D)Ohm

Question 15

In an IEC-320 plug, which wire carries electrical voltage?

A)Earth
B)Ground
C)Hot
D)Neutral

Question 16

Which unit is used to measure current?

A)Ampere
B)Ohm
C)Volt
D)Watt

Question 17

What UL rating is preferred for a surge suppressor?

A)UL497A
B)UL1497A
C)UL1449
D)1750 joules

Question 18

Which type of wire carries no voltage?

A)Ground
B)Hot
C)Multimeter
D)Neutral

Question 19

What type of voltage does a PC use?

A)AC
B)DC
C)Ground
D)LC

Question 20

Which unit is used to measure resistance?

A)Joule
B)Ampere
C)Ohm
D)Watt

Question 21

The notches that guide installation in the Molex connector are called _______________.

A)chamfers
B)channels
C)ports
D)sockets

Question 22

Which industry group came up with a non-ATX standard motherboard and power supply called EPS12 V?

A)Hardware System Infrastructure
B)Server Power Infrastructure
C)Server System Infrastructure
D)Software System Infrastructure

Question 23

What type of power connector is L-shaped?

A)P1
B)Mini
C)Molex
D)SATA

Question 24

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 fuse.
C)Switch the voltage from 110 to 220.
D)Replace the power supply fan.

Question 25

A PC does not work.What should you check first?

A)The tower supply voltages
B)The 12 V power supply
C)Whether the DC plug is plugged in
D)Whether the AC plug is plugged in

Question 26

Which statement is true of computer cases?

A)An open case allows for better cooling.
B)An open case lowers cooling efficiency.
C)Small cases do not require cooling.
D)Large cases do not require cooling.

Question 27

How many watts of power does a typical hard drive in a PC require?

A)10
B)15
C)20
D)25

Question 28

Most case fans have standard _______________ connectors that are easy to plug in but can be forced to be connected the wrong way.

A)Molex
B)mini
C)micro
D)sub-mini

Question 29

In the past, how much power was supplied by power supplies with 12-V rails?

A)3 amps
B)30 amps
C)18 amps
D)81 amps

Question 30

A(n) _______________ power supply converts energy efficiently.

A)Active PFC
B)EPS 12V
C)SPS
D)UPS

Question 31

Which tool uses the soft power feature?

A)AT
B)ATX
C)SATA connectors
D)Molex power supply

Question 32

Power supplies are rated for efficiency based on _______________ drawn to supply sufficient power to the PC.

A)amperes
B)ohms
C)volts
D)watts

Question 33

The _______________ power supply has a 24-pin main motherboard that resembles a 20-pin ATX connector.

A)EPS12 V
B)Molex
C)mini
D)P4 21 V

Question 34

How many watts of power does an Intel i7-4790K require at peak performance?

A)50
B)100
C)150
D)200

Question 35

Modern power supplies have multiple _______________.

A)fuses
B)connectors
C)fans
D)voltage selectors

Question 36

Which is the latest ATX power supply standard?

A)ATX12V 1.3
B)ATX12V 2.0
C)ATX12V 3.0
D)EPS12V

Question 37

What class of fire extinguisher should be used on an electrical fire?

A)Class A
B)Class B
C)Class C
D)Class D

Question 38

Which power supply never turns off?

A)ATX
B)AT
C)P8, P9
D)P1

Question 39

Empty expansion bays must be covered by a _______________ to maintain proper airflow inside the case.

A)case sheath
B)case cover
C)slot lid
D)slot cover

Question 40

Molex connectors are used for _______________ power.

A)central
B)AC
C)backup
D)peripheral

Question 41

A(n) _______________ is the unit of electrical energy.

Question 42

The amount of amps and volts needed by a particular device to perform its function is expressed in _______________.

Question 43

The power supply connects to the power cord via a standard _______________ connector.

Question 44

_______________ is the amount of electrons moving past a certain point on a wire.

Question 45

To handle differing voltages in multiple countries, most power supplies have _______________ options.

Question 46

If a multimeter shows infinite _______________ between one end of a wire and the other, then there is no continuity.

Question 47

The IEC-320 plug has three holes: the _______________, the _______________, and the ground.

Question 48

The flow of negatively charged particles through matter is also known as _______________.

Question 49

_______________ current allows electrons to flow in one direction around continuous circuits.

Question 50

Large sags in electricity are also known as _______________.

Question 51

The V ~ sign stands for _______________ current.

Question 52

A(n) _______________ is used to test AC outlets.

Question 53

The _______________ wire helps excess electricity to return safely to the ground.

Question 54

The _______________ test by a multimeter checks whether electrons can flow from one end of the wire to the other.

Question 55

The _______________ in a computer converts AC power to DC.

Question 56

_______________ current allows electrons to flow in alternate directions back and forth in a circuit.

Question 57

The pressure of electrons in a wire is called _______________.

Question 58

A(n) _______________ is also called a volt-ohm meter (VOM) or digital multimeter (DMM).

Question 59

A(n) _______________ is inserted between the power supply and the outlet to protect the system from power surges.

Question 60

Wires have a slight _______________ to the flow of electrons.

Question 61

In order to check power supply voltages, the power supply must be _______________.

Question 62

All uninterruptible power supplies are measured in _______________ and in volt-amps (VA).

Question 63

The _______________-pin motherboard power connector is backward compatible with the older 20-pin connector so that users do not have to buy a new motherboard if they use an ATX12V 2.0 power supply.

Question 64

A(n) _______________ is used to create more connections to power all the devices in a PC.

Question 65

L-shaped power connectors are used for _______________ drives.

Question 66

Every device in a PC requires a certain amount of _______________ to function, derived from the amount of amps and volts it needs.

Question 67

Higher-end PCIe cards have a dedicated _______________-pin or _______________-pin PCIe power connector.

Question 68

A(n) _______________ is used to protect the computer from a power sag or power outages.

Question 69

A system you maintain locks up randomly.This is very likely due to _______________ problems.

Question 70

All better _______________ add power conditioning to filter out EMI and RFI.

Question 71

A(n) _______________ can protect equipment during power sags.

Question 72

The _______________ provides basic cooling for the PC.

Question 73

Ideally, rails should be independent and not draw _______________ from each other.

Question 74

The _______________ located near the top of the computer case takes air from inside the case and sends it outside.

Question 75

_______________ assist in maintaining proper airflow and keeping the dust and smoke out of the case.

Question 76

Modern motherboards use a(n) _______________- or _______________-pin P1 power connector.

Question 77

Many modern ATX motherboards feature a(n) _______________-pin CPU power connector like the one found in the EPS12V standard.

Question 78

In addition to battery-supplied power, every _______________ has surge suppression and power conditioning

Question 79

_______________, which are large, square fans, provide extra cooling for key components inside a PC.

Question 80

Mini power connectors are most often used on older systems for _______________ drives.