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CompTIA A+ 220-1001 > Power > Flashcards

Power Flashcards

1
Q

Power rating for a power supply

A

wattage

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2
Q

Most significant characteristic in determining how many devices a power supply can support

A

wattage

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3
Q

technology that allows CPU to slow down if thermal output reaches a critical level or to improve power performance

A

throttling

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4
Q

The potential difference between two points.

A

Voltage

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5
Q

The actual flow of electrons

A

Current

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6
Q

The degree of opposition to the current caused by the conductor

A

Resistance

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7
Q

The rate at which electricity is drawn from the supply by the device using it

A

Power

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8
Q

The amount of power consumed by a device over time

A

Energy

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9
Q

Voltage is measured in..

A

Volts

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10
Q

Current is measured in …

A

Amps

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11
Q

Resistance is measured in …

A

Ohms

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12
Q

Power is measured in…

A

Watts

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13
Q

Energy is measured in…

A

Kilowatts

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14
Q

A material that acts as both conductor and insulator

A

Semiconductor

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15
Q

A material that can oppose the flow of current without blocking it completely and is used to manage electronic circuits.

A

Resistor

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16
Q

A valve allowing a current to flow in one direction only

A

Diode

17
Q

A safety device designed to break a wire, breaking the current and shutting off the current

A

Fuse

18
Q

A semiconductor switch used to create logical devices

A

Transistor

19
Q

A device which stores electrical energy and is often used to regulate voltage

A

Capacitor

20
Q

What is the power setting in the US?

A

115V

21
Q

What is the power setting in the UK?

A

240V

22
Q

Maximum power output available from a PC power supply, measured in watts, calculated voltage multiplied by current.

A

Power rating

23
Q

Power rating of typical desktop PC

A

200 - 300 W

24
Q

Power rating of Slimline Desktop PC

A

100 - 200 W

25
Q

Power Rating of towers and servers

A

over 300 W

26
Q

Power rating of Gaming PCs

A

over 500 W

27
Q

A power supply rail safety feature that cuts the power that cuts the power circuit if the power exceeds a safe limit.

A

OCP (Overcurrent protection)

28
Q

A module that ensures the motherboard delivers the voltage required by the CPU

A

Voltage regulator

29
Q

The adaptor from the power supply that supplies power to the motherboard

A

Main connector

30
Q

A power connector that is used to supply power to PATA , SCSI and Optical drives.

A

Molex

CompTIA A+ 220-1001 (13 decks)

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