WorksheetsModule 3: Power Supplies
Total questions: 13
Worksheet time: 16mins
Power supplies convert AC power from the wall into what type of power?
DC
Voltage
Wattage
Ultimate Power
The main power connector for the motherboard has how many pins?
8
20 or 24
4
12
In North America, electrical systems operate at around what voltage?
440
220
110
24
When working inside a computer, it's important to power it off and unplug it.
True
False
To calculate the wattage of a device, we use what formula?
volts + amps
volts × amps
volts ÷ amps
πr2
If a power supply is found to be defective, you should attempt to repair it.
True
False
Electrical systems in Europe, Africa, and Asia mostly operate at around what voltage?
110
220
60
180
The main power connector for the motherboard is called what?
Main
ATX
P1
20- or 24-pin connector
When troubleshooting a PC that is not powering on, what is the BEST first step?
Open the case and check the main power connector
Replace the power supply
Verify power from the wall
Replace the power cord
In addition to power from the wall, mobile devices can also be powered by what?
Nuclear power
Water
Solar power
Rechargeable batteries
When choosing a power supply, what are the two most important items to consider?
Size and Shape
Wattage and Connectors
Voltage and Amperage
Brand and Color
