Power Supply and Voltage Settings Quiz

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Questions and Answers

What is the best practice when working inside a computer?

Keep everything plugged in for easy access

Always disconnect from the power source (correct)

Work with gloves to avoid shocks

Connect yourself to the electrical ground

What should you do even after unplugging from the power source due to capacitors in some components?

Touch all components to discharge any remaining power

Ignore the capacitors as they pose no risk

Follow the manufacturer's instructions to dissipate all power (correct)

Immediately reconnect to the power source

What type of power do computer motherboards and components commonly use?

Static electricity

Mechanical power

Direct Current (DC) power (correct)

Alternating Current (AC) power

Why is it important not to connect yourself to any part of the electrical ground system?

To avoid electric shocks Signup and view all the answers

What is the recommended approach to determine the proper size of a power supply for your system?

Use a power calculator available on websites Signup and view all the answers

Why might it be beneficial to double the calculated wattage when selecting a power supply?

To ensure that the power supply runs efficiently Signup and view all the answers

When might it be necessary to manually calculate the wattage needed for a power supply?

When using an old or proprietary system Signup and view all the answers

What information can be found in the documentation of a discrete video card that helps in selecting an appropriate power supply?

Recommended power supply wattage Signup and view all the answers

What component inside a computer system converts AC power to DC power?

Power supply Signup and view all the answers

What is the rate of electrons passing by a particular point in one second known as?

Amperes Signup and view all the answers

What is the measurement used to quantify the force pushing electrons through a wire?

Volts Signup and view all the answers

In terms of power supplies, what is a watt used to measure?

Real power use Signup and view all the answers

Which type of current constantly alternates direction?

Alternating current Signup and view all the answers

What is the frequency of alternating current commonly found in the US and Canada?

60 hertz Signup and view all the answers

What happens if you plug a manually switched 120 volt power supply into a 230 volt source?

Sparks and smoke will be generated Signup and view all the answers

What should you set the switch on the back of the power supply to before reconnecting the power?

120 volts Signup and view all the answers

What is a characteristic of direct voltage mentioned in the text?

Can be positive or negative Signup and view all the answers

Which components inside the system are commonly associated with higher voltages?

PCI Express adapters Signup and view all the answers

What is the Standby voltage used for in a computer system?

To provide power when the system is in hibernate mode Signup and view all the answers

What type of voltage might some older components on a system require?

-12 volts Signup and view all the answers

What does the 24-pin connector provide to the motherboard?

+12 volts Signup and view all the answers

What happens if you plug in a 24-pin connector to an older motherboard?

The four pins at the end will not be connected Signup and view all the answers

How can you remove the power connector from the motherboard?

Push down on the clip and remove the entire connector Signup and view all the answers

In a data center or with servers, how are the loads distributed between multiple power supplies when both are plugged in?

Load is evenly distributed across both power supplies Signup and view all the answers

What does hot-swappable mean in relation to power supplies?

The power supplies can be replaced without powering down the server Signup and view all the answers

How do modular power supplies differ from non-modular ones?

Modular power supplies allow you to choose which connections to use Signup and view all the answers

What is one advantage of having a completely modular power supply in your system?

Better customization of cable connections Signup and view all the answers

How would you typically size a power supply for a system?

According to how many watts it can handle Signup and view all the answers

What happens if you purchase a high-wattage power supply compared to what's needed for your system?

'Additional capacity doesn't change overall speed or efficiency' Signup and view all the answers

'Hot-swappable' refers to:

'Power supplies that can be replaced without powering down the server' Signup and view all the answers

'Modular' power supplies allow you to:

'Choose exactly which cables or connections to use' Signup and view all the answers

'Balancing the maximum capacity of a power supply with how much power you’re going to need' is important because:

'It avoids overloading or underutilizing the power supply' Signup and view all the answers

What do the fixed wires of a hybrid version of a fixed and modular power supply do?

Securely attach all connectors permanently Signup and view all the answers

Study Notes

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Description

Test your knowledge on power supplies, voltage settings, and converting AC to DC. Learn about setting the correct voltage, converting to multiple DC voltages, and powering different components on a motherboard.