Deck 10: Power Supplies

Question 1

Which of the following units is used to measure resistance?

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

Answer 1

C

Question 2

Most case fans have standard ____ connectors that are easy to plug in.

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

Answer 2

A

Question 3

A surge suppressor should be rated at a minimum of ____ joules.

A) 330
B) 400
C) 800
D) 1,449

Answer 3

C

Question 4

Which power supply never turns off?

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

Question 5

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

A) There are no issues to be concerned about.
B) 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 6

What is the unit of measuring current?

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

Question 7

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

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

Question 8

Which of the following uses the soft power feature?

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

Question 9

The P1 connector from the power supply is plugged into the ____ socket.

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

Question 10

What unit is used to measure voltage?

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

Question 11

Which of the following wires carries no voltage?

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

Question 12

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

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

Question 13

What type of voltage does a PC use?

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

Question 14

Expansion bays must be covered by the ____ to maintain proper airflow inside the case.

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

Question 15

What type of power connector is L-shaped?

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

Question 16

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 17

Molex connectors are used for ____ power.

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

Question 18

The standard modern power supply provides ____ volts of power.

A) 3.3,5,and 12
B) 5 and 12
C) 6 and 12
D) 12

Question 19

The 3.5-inch floppy drive uses the ____ connector.

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

Question 20

Power supplies are rated in ____.

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

Question 21

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 22

Which is the latest ATX power supply standard?

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

Question 23

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

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

Question 24

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

A) 12
B) 15
C) 20
D) 18

Question 25

Modern power supplies have multiple:

A) Fuses
B) Connectors
C) Fans
D) Voltage selectors

Question 26

Older power supplies with 12V rails previously only supplied how much power?

A) 30 amps
B) 3 amps
C) 50 amps
D) 16-18 amps

Question 27

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 28

What UL rating should you look for on a surge suppressor?

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

Question 29

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 30

Large sags in electricity are also known as:

A) Brownouts
B) Blackouts
C) Spikes
D) Surges

Question 31

A (n)____ power supply converts energy efficiently.

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

Question 32

How many watts of power does an Athlon64X2 CPU require at peak performance?

A) 50
B) 70
C) 110
D) 200

Question 33

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 34

The ____ power supply has a 24-pin main motherboard that resembles a 20-pin P1 connector.

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

Question 35

What is it called when power cuts out completely?

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

Question 36

What should be the outputs of the hot,neutral,and ground wires 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 37

Power supplies are protected from spikes of AC current with the use of a ____.

A) fuse
B) surge suppressor
C) UPS
D) All of the above

Question 38

A PC doesn't work.What should you check first?

A) Power supply voltages
B) 12 V power supply
C) Ensure DC plug is plugged in
D) Ensure AC plug is plugged in

Question 39

What is the amount of amps and volts needed by a particular device to function called?

A) Amperes
B) Resistance
C) Voltage
D) Wattage

Question 40

Which of the following is a correct statement?

A) An open case allows better cooling.
B) An open case ruins airflow and loses cooling efficiency.
C) Cooling the PC is not recommended.
D) Large cases do not require cooling.

Question 41

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

Question 42

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

Question 43

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

Question 44

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

Question 45

The pressure of electrons in a wire is called ____________________.

Question 46

L-shaped power connectors are used for ____________________.

Question 47

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

Question 48

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

Question 49

Mini connectors are often called ____________________ power connectors.

Question 50

The ____________________ in a computer converts AC power to DC.

Question 51

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

Question 52

All uninterruptible power supplies are measured in ____________________.

Question 53

Wires have a slight ____________________ to the flow of electrons.

Question 54

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

Question 55

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

Question 56

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

Question 57

A (n)____________________ will provide conditioned AC by filtering out noise and will also protect against power dips.

Question 58

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

Question 59

A (n)____________________ is also called a volt-ohm meter.

Question 60

A (n)____________________ is used to protect the computer from frequent power dips or power outages.

Question 61

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

Question 62

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

Question 63

A (n)____________________ has a power-conditioning feature.

Question 64

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

Question 65

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

Question 66

A __________ can protect equipment during power sags.

Question 67

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

Question 68

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

Question 69

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

Question 70

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

Question 71

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

Question 72

The ____________________ provides basic cooling for the PC.

Question 73

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

Question 74

____________________ provide extra cooling for key components.

Question 75

Large sags in electricity are also known as __________.

Question 76

To handle differing voltages in multiple countries,most power supplies are __________.

Question 77

The V ~ sign stands for ____________________ current.

Question 78

Modern ATX12V power supplies add the ____________________ connector,providing additional 12-volt power.

Question 79

Modern motherboards use a ____________________-or ____________________-pin P1 power connector.

Question 80

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