Computer Power Supply Quiz

What is the function of a power supply in a computer system?

• To process data

• To store information

• To power every component

• To cool the system

Answer explanation

The function of a power supply in a computer system is to power every component, providing the necessary electrical energy for the system to function properly.

What does AC stand for in the context of power supplies?

• Alternating Current

• Advanced Circuit

• Automatic Conversion

• Auxiliary Component

Answer explanation

AC stands for Alternating Current in the context of power supplies.

What type of current is distributed through wall sockets?

• Direct Current (DC)

• Battery Current

• Alternating Current (AC)

• Static Current

Answer explanation

Wall sockets distribute Alternating Current (AC) which periodically changes direction, unlike Direct Current (DC) which flows in one direction only.

What type of current is used inside a computer?

• Alternating Current (AC)

• Battery Current

• Direct Current (DC)

• Static Current

Answer explanation

Inside a computer, Direct Current (DC) is used as the type of current. DC flows in one direction and is commonly used in electronic devices like computers.

What do standard ATX power supplies provide?

• +3.3 volts, +5 volts, and +12 volts of AC power

• +3.3 volts, +5 volts, and +12 volts of DC power

• +3.3 volts, +5 volts, and +12 volts of battery power

• +3.3 volts, +5 volts, and +12 volts of static power

Answer explanation

The standard ATX power supplies provide +3.3 volts, +5 volts, and +12 volts of DC power.

What is the purpose of having separate rails in a power supply?

• To increase the storage capacity

• To balance the power load between multiple circuits

• To convert more AC to DC power

• To enhance the processing speed

Answer explanation

Having separate rails in a power supply helps balance the power load between multiple circuits, ensuring stable and efficient power distribution.

What is the purpose of the fan in all ATX power supplies?

• To light up the unit

• To process data faster

• To cool the unit

• To convert AC to DC power

Answer explanation

The purpose of the fan in all ATX power supplies is to cool the unit, preventing overheating and ensuring proper functioning.

What should power supplies match in a computer system?

• The operating system version

• The motherboard and case form factor

• The graphics card model

• The CPU speed

Answer explanation

Power supplies in a computer system should match the motherboard and case form factor to ensure compatibility and proper fit within the system.

In most modern power supplies, how is the voltage switch functionality handled?

• It is locked to a single voltage setting

• It is manually toggled between 100 and 220 volts

• It automatically adjusts to accept input voltages in the range of 100 to 240 volts

• It requires a special adapter for different voltages

Answer explanation

The correct choice is that the voltage switch functionality in most modern power supplies automatically adjusts to accept input voltages in the range of 100 to 240 volts.

What is the purpose of the switch on the back of many power supplies?

• To adjust the fan speed

• To change the display settings

• To turn the power on or off

• To switch between AC and DC power

Answer explanation

The purpose of the switch on the back of many power supplies is to turn the power on or off.