Test Out PC Pro - 3.2.6 Practice Questions (Power supplies)

You have a desktop that you want to upgrade. You add several internal components and external components. You realize that you need to ensure that your power supply can support all of the new devices. Which of the following power supply ratings BEST describes the rating used to determine this? 1.) Watt rating 2.) AC voltage rating 3.) DC voltage rating 4.) Resistance rating

1.) Watt rating

You need to replace the power supply in your home desktop computer. Which of the THREE following specifications are most likely to affect your power supply choice? 1.) Input voltage 2.) Output wattage 3.) Form factor 4.) Output voltage 5.) Type and number of connectors

2.) Output wattage 3.) Form factor 5.) Type and number of connectors

Which of the following are true statements regarding power supply wattage? 1.) A system's wattage requirement equals the highest wattage requirements for a single circuit. 2.)The watt rating indicates how much power can be supplied to various devices. 3.)The wattage requirement for each individual circuit uses formula W= V x A 4.) The lower wattage rating, the more amps a power supply can deliver. 5.) A system's wattage requirement does not depend on the amount of devices in the system.

2.) The watt rating indicates how much power can be supplied to various devices. and 3.)The wattage requirement for each individual circuit uses formula W= V x A

You are trying to troubleshoot a power supply issue with a voltmeter. Which of the following options are common voltages produced by a desktop power supply? (select two) 1.) +/- 120v 2.) +/- 110v 3.) +/- 12v 4.) +/- 10v 5.) +/- 5v

3.) +/- 12v 5.) +/- 5v

You have a laptop with a dual core processor with the following characteristics: * 1024 MB L2 cache * 125 Watts * 45nm process size You want to upgrade the processor to one that uses less power. Which of the following characteristics would most likely identify a processor that uses less power? 1.) 512 MB L2 cache 2.) 32nm process size 3.) 90 watts 4.) Single-core processor

3.) 90 watts

You need to replace the power supply in your desktop. As you choose the replacement power supply, which of the following specifications are the most likely to affect your choice? (choose three) 1.) Input frequency 2.)Input voltage 3.) Form factor 4.) Output frequency 5.) Output wattage 6.) Processor connector 7.) Output voltage

3.) Form factor 5.) Output wattage 6.) Processor connector

An employee submitted a support ticket stating that her computer will not turn on. Which of the following troubleshooting steps should you take first?(Choose two) 1.)Use multimeter to test the power supply. 2.)Make sure the keyboard and mouse are plugged in. 3.)Open the computer and replace the power supply. 4.) Make sure the power cord is plugged into the wall. 5.)Make sure the surge protector is turned on.

4.) Make sure the power cord is plugged into the wall. 5.)Make sure the surge protector is turned on.

A computer's power supply converts mains AC to low-voltage regulated DC power for the internal components of a computer. You are building a new computer. You are deciding which type of power supply to install. What best describes a valid type of power supply.

A dual-rail power supply provides separate rails (PCB traces) used to balance the power load between multiple circuits, which prevents any one circuit from becoming overloaded.

You are testing the power supply in a PC system by measuring the voltage available on the 4-pin Molex connector. The voltage on the red wire is +5.1 volts. What should you do?

Nothing. The power supply is working normally.

You are servicing a client's computer that has been randomly restarting. You decide to test the power supply using a multimeter. You connect the positive lead to the yellow wire on one of the Molex connectors. What should you do if the multimeter shows 10.24?

Replace the power supply because it is failing.

You are testing the power supply in a PC system by measuring the voltage available on the 4-pin Molex connector. The voltage on the yellow wire is +10.1 volts. What should you do?

Replace the power supply.

Your company relocated you to their United Kingdom office in London. You brought your personal computer with you and are in the process of setting it up. Your computer was previously configured to receive 110 V AC, but the electricity in London uses 230 V AC. What would allow your computer to run on 230 V AC?

Toggle the voltage switch on the power supply to the different voltage.

You have a desktop computer that uses a 250 Watt power supply. You recently added a 4-disk RAID 10 array to the system and now it spontaneously shuts down. What should you do?

Upgrade to a power supply that provides more watts.

You are building a computer from both new and used parts. The video card is a PCIe video card that requires an 8-pin connector. However, your power supply doesn't have an 8-pin PCIe power connector. What would be the least expensive option for your system?

Use an adapter cable to connect two 4-pin Molex connectors to the 8-pin PCIe connector.