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35 Cards in this Set
- Front
- Back
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T/F When testing with Multimeter red lead goes into hot opening first? |
F, Black lead goes into ground opening first. |
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What is dirty power? |
Power readings that fluctuate. Call electrician. |
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What can you use to keep an AC outlets voltage steady? |
Uninterruptible Power Supply (UPS) or line conditioner |
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What is a power surge? brownout? and a blackout? |
1. Unexpected increase in voltage2. Drop in voltage that can cause computers to shut off3. Total loss of power for prolonged time. |
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What can you use to protect against surges and spikes |
Surge protector |
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What does UPS do? |
Takes functionality of surge suppressor and combines with a battery backup |
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What can you use to protect computer from power outages? |
UPS/battery backup |
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What is the purpose of "dual–rail" PSU power supply units? |
Separate and Limit the current through each wire to avoid over-heating |
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What are the most common power connectors? |
Molex, SATA and PCIe |
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What are symptoms power supply needs to be replaced? |
1. Fan failure2. Fuse failure3. Quick death4. Slow death |
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What can you use to test a 24–pin power connectior? |
PSU tester or a multimeter |
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T/F When upgrading components, you should not make sure to check if power supply needs to be upgraded? |
F |
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What can cause system overheating? |
1. Power supply failure2. Auxiliary case fan failure3. Inadequate number of fans4. Missing or open slot covers5. Case isn't tightly closed and screwed in6. Location of computer |
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A user doesn't see anything in his laptop's screen. He tries to use AC power and thinks that the laptop is not receiving any. What are two reasons for this? |
1. An incorrect adapter2. The AC adapter is not connected to the laptop |
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A customer reports that she walked away from her laptop for 30 minutes. When she returned her display was dim. She increased brightness to no avail. What should you do first? |
Check whether the laptop is not on battery power. |
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What are two possible reasons a laptops display went blank with no user intervention? |
1. A damaged inverter 2. Burned–out bulb |
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Which is the most common battery used by todays laptops? |
Lithium–ions |
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Where do you modify battery alarms in Windows? |
Power options in Control Panel |
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T/F You should open a power supply? |
F, If it fails replace it with a working unit |
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What are symptoms power supply needs to be replaced? |
1. Fan failure2. Fuse failure3. Quick death4. Slow death |
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What can you use to test a 24–pin power connectior? |
PSU tester or a multimeter |
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T/F When upgrading components, you should not make sure to check if power supply needs to be upgraded? |
F |
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What can cause system overheating? |
1. Power supply failure2. Auxiliary case fan failure3. Inadequate number of fans4. Missing or open slot covers5. Case isn't tightly closed and screwed in6. Location of computer |
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What can you use to protect computer from power outages? |
UPS/battery backup |
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What is the purpose of "dual–rail" PSU power supply units? |
Separate and Limit the current through each wire to avoid over heating |
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What is this? //fce-study.netdna-ssl.com/2/images/upload-flashcards/76/64/04/20766404_m.png |
Molex Power Connector |
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What does UPS do? |
Uninterruptible Power Supply (UPS) or line conditioner |
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What is a power surge? brownout? and a blackout? |
1. Unexpected increase in voltage2. Drop in voltage that can cause computers to shut off3. Total loss of power for prolonged time. |
|
|
What can you use to protect against surges and spikes |
Surge protector |
|
|
T/F When testing with Multimeter red lead goes into hot opening first? |
F, Black lead goes into ground opening first. |
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What is dirty power? |
Power readings that fluctuate. Call electrician. |
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What can be used to measure amps and impedance and to test voltage inside a computer and from AC outlets? |
Mulitmeter |
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How do you handle a multimeter? |
Hold both multimeter leads with one hand and hold them by plastic handles |
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What are the most common outlets and examples? |
Type B ex. (wall sockets, eletric receptacles, power points) |
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What do you use to test AC outlets are wired properly? |
Receptacle Tester |
