What is the main function of a power supply unit (PSU) in a computer?

• Convert AC power from an outlet to DC power

• Manage the power consumption of the CPU

• Provide backup power during a power outage

• Distribute heat evenly throughout the system

Which of the following is a common power supply form factor used in desktop PCs?

• ATX

• BTX

• SFX

• EPS

What is the purpose of the +12V rail in a power supply?

• Powers the CPU

• Powers high-power components such as graphics cards

• Powers storage devices

• Powers peripheral devices

Which of the following is NOT a typical reason for a power supply to fail?

• Excessive voltage

• Overheating

What does the efficiency rating of a power supply indicate?

• The speed at which it transfers power

• The ability of the PSU to convert AC to DC power without losing energy

• The total wattage the PSU can handle

• The time the PSU can run without overheating

What does a modular power supply allow a user to do?

• Adjust the PSU wattage according to the system load

• Add more power cables to the PSU as needed

• Connect only the cables required for a specific system configuration

• Attach multiple power supplies to a single system

Which type of connector is used to supply power to a modern motherboard?

• 24-pin ATX connector

• 8-pin PCIe connector

• 6-pin power connector

• SATA power connector

Which component of the power supply converts AC voltage into DC voltage?

What is the typical lifespan of a computer power supply unit (PSU)?

• 1-2 years

• 3-5 years

• 6-8 years

• 10-15 years

Which power supply rail is typically used to power the CPU?

• +3.3V

• +5V

• +12V

• +24V