Week 5 Power Supply

Question 1

a _______ _______ supplies electric power to the components of the unit. converts _______ to _______

Answer 1

a power supply supplies electric power to the components of the unit. converts AC to DC

Question 2

power supplies have a power input which receives energy and _______ or _______ power output connections that deliver _______

Answer 2

power supplies have a power input which receives energy and one or more power output connections that deliver current

Question 3

power supplies _______ and delivers power to components

Answer 3

power supplies regulates and delivers power to components

Question 4

power supplies turns _______ 110v or _______ _______ into DC voltages suitable for powering the computer’s components

Answer 4

power supplies turns incoming 110v or 220v AC into DC voltages suitable for powering the computer’s components

Question 5

power supplies quoted as having a certain power output specified in watts, standard power supply would be able to deliver around _______ watts

Answer 5

power supplies quoted as having a certain power output specified in watts, standard power supply would be able to deliver around 350 watts

Question 6

more _______ you have in your pc, the greater the _______ required from the power supply.

Answer 6

more components you have in your pc, the greater the power required from the power supply.

Question 7

AC alternating current comes from the outlet

_______ _______ _______ goes to the PC

Answer 7

AC alternating current comes from the outlet

DC direct current goes to the PC

Question 8

_______ negatively charged particles

Answer 8

electrons negatively charged particles

Question 9

Electricity _______ 110-115v other countries use 220-230v

Answer 9

Electricity Volts 110-115v other countries use 220-230v

Question 10

volts is _______ of electrons

Answer 10

volts is pressure of electrons

Question 11

Amperes is the _______ of electrons _______ second flowing between _______ points like the amount of water per sec. leaving a dam thru a pipe (the higher the amount the more dangerous)

Answer 11

Amperes is the amount of electrons per second flowing between two points like the amount of water per sec. leaving a dam thru a pipe (the higher the amount the more dangerous)

Question 12

_______ - amount of power (typical PC today uses about 500 watts)

Answer 12

Watts - amount of power (typical PC today uses about 500 watts)

Question 13

Power is _______ times volts

Answer 13

Power is amps times volts

Question 14

Ohms - _______ impedance similar to _______ _______

Answer 14

Ohms - resistance impedance similar to gate valve

Question 15

parts of a \_\_\_\_\_\_\_ \_\_\_\_\_\_\_
cover
disk drive connectors
motherboard connector
input voltage selector
power plug receptacle
power supply fan

Answer 15

parts of a power supply
cover
disk drive connectors
motherboard connector
input voltage selector
power plug receptacle
power supply fan

Question 16

_______ voltage selector allows you to choose which source or _______ voltage you are to use

Answer 16

input voltage selector allows you to choose which source or input voltage you are to use

Question 17

power plug _______ connect power supply to wall socket

Answer 17

power plug receptacle connect power supply to wall socket

Question 18

power supply _______ circulates air throughout power supply, acts as a cooling system to the power supply

Answer 18

power supply fan circulates air throughout power supply, acts as a cooling system to the power supply

Question 19

_______ provides structural support to the power supply and keeps dust out

Answer 19

cover provides structural support to the power supply and keeps dust out

Question 20

disk drive connectors designed to be attached to the _______ of each drive

Answer 20

disk drive connectors designed to be attached to the rear of each drive

Question 21

motherboard connector connects to motherboard, processor, memory, chipset, integrated components (such as video, LAN universal USB, and FireWire. and any card plugged into _______ bus slots

Answer 21

motherboard connector connects to motherboard, processor, memory, chipset, integrated components (such as video, LAN universal USB, and FireWire. and any card plugged into expansion bus slots

Question 22

_______ a static device that transfers electrical energy from primary winding to secondary winding without affecting frequency. reducing or increasing voltage of AC

Answer 22

transformer a static device that transfers electrical energy from primary winding to secondary winding without affecting frequency. reducing or increasing voltage of AC

Question 23

_______ it is a device used to change AC power into DC basic. basic _______ is diode. a diode is a unidirectional device that acts as _______ in forward direction. the three basic _______ circuits using diodes are the _______-wave, full-wave _______-tapped and full-wave _______ type.

Answer 23

rectifier it is a device used to change AC power into DC basic. basic rectifier is diode. a diode is a unidirectional device that acts as rectifier in forward direction. the three basic rectifier circuits using diodes are the half-wave, full-wave center-tapped and full-wave bridge type.

Question 24

_______ - of power supply is used to keep the ripple component from appearing in the output. it is designed to convert pulsating dc from rectifier circuits into a suitably smooth dc level.

Answer 24

filter - filter of power supply is used to keep the ripple component from appearing in the output. it is designed to convert pulsating dc from rectifier circuits into a suitably smooth dc level.

Question 25

_______ regulator intended to give a very steady or well regulated dc output, it is always best to have a steady output _______ so that the load will function properly the output level is maintained despite of the variation of the input _______ dc _______ is lower than ac _______

Answer 25

voltage regulator intended to give a very steady or well regulated dc output, it is always best to have a steady output voltage so thath the load will function properly the output leel is maintained despite of the variation of the input voltage dc voltage is lower than ac voltage

Question 26

_______ voltage regulator the _______ element controls the amount of the unregulated input voltage that goes to the output as a regulated output. the regulated output voltage is sampled by a circuit that provides a feedback to the comparator circuit and is compared to a reference voltage.

Answer 26

series voltage regulator the series element controls the amount of the unregulated input voltage that goes to the output as a regulated output. the regulated output voltage is sampled by a circuit that provides a feedback to the comparator circuit and is compared to a reference voltage.

Question 27

_______ voltage regulator provides regulation by _______ current away from the load to regulate the output voltage

Answer 27

shunt voltage regulator provides regulation by shunting current away from the load to regulate the output voltage

Question 28

ic _______ regulator a regular _______ circuit unit contains the circuitry - the reference _______, comparator, amplifier, control device, and the _______ protector - inside a single IC. There are also adjustable voltage regulators which allow the user to set the desired output level. Other IC _______ have unchanging output values. It is said that IC regulators are _______ compared to _______ voltage regulators when it comes to linearity of the output _______.

Answer 28

ic voltage regulator a regular integrated circuit unit contains the circuitry - the reference source, comparator, amplifier, control device, and the overload protector - inside a single IC. There are also adjustable voltage regulators which allow the user to set the desired output level. Other IC regulators have unchanging output values. It is said that IC regulators are superior compared to transistor voltage regulators when it comes to linearity of the output voltage.

Question 29

a power supply can be _______ changed and are generally _______ _______ it is more _______ to replace

Answer 29

a power supply can be easily changed and are generally not expensive it is more economic to replace

Question 30

``` black wire used to provide a ground for the current. every other color should be paired with a _______ wire yellow wires this colors denotes +12volt red wires this color denotes +5volt blue wires -12volt white wires -5volt orange wires 3.3volt _______ wires control wire to check dc voltage purple wires +5v on standby mode ```

Answer 30

``` black wire used to provide a ground for the current. every other color should be paired with a black wire yellow wires this colors denotes +12volt red wires this color denotes +5volt blue wires -12volt white wires -5volt orange wires 3.3volt green wires control wire to check dc voltage purple wires +5v on standby mode ```