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A+ Sections 1-27 1011 > Section 4 - Cooling and Power > Flashcards

Section 4 - Cooling and Power Flashcards

1
Q

What types of cooling exist

A

Passive, Active and Liquid

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2
Q

What is thermal load

A

The heat from different components inside the computer

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3
Q

What is passive cooling

A

Type of cooling that doesn’t rely on moving parts or power e.g. heat sink

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4
Q

Define heat sink

A

Finned metal device that radiates heat away from the processor

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5
Q

Define thermal paste

A

Compound that ensures heat transfer by eliminating air gaps

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6
Q

Passive cooling benefits

A

Requires no power to operate and is silent when operating

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7
Q

Define active cooling

A

Uses a fan to cool down the heat from the device

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8
Q

Type/location of fans

A

Processor fan, Case fan, Back of PSU, External GPU Fan

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9
Q

What is a recommendation when it comes to dust on fans

A

Remove excess dust from the fan every 3-6 months

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10
Q

When dealing with passive cooling, what is involved

A

Heat sinks, thermal paste

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11
Q

When dealing with active cooling, what is involved

A

Case Fans, Processor fans

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12
Q

Liquid cooling system types

A

Closed Loop System and Open Loop System

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13
Q

Closed Loop vs Open Loop System

A

Closed Loop cools only a single component whereas an Open Loop system cools different components (Much more popular)

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14
Q

Why does liquid cooling systems work so well

A

Water and liquids are more effective coolants than air convection

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15
Q

What type of system is Liquid Cooling associated with?

A

High performance system (Video editing/Gaming)

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16
Q

What happens with alternating current (AC)

A

Positive and negatives are cycled between repeatedly

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17
Q

PSU main purpose

A

Delivery direct current (DC) to all components inside the PC when receiving an alternating current (AC) power supply

18
Q

Explain Modular PSU

A

Allows to unhook the connectors and detach from the unit

19
Q

What does a Modular Power Supply Do

A

Frees up space inside of the computer

20
Q

What may be a good idea when running a server in terms of PSUs and motherboard

A

Using a motherboard that supports redundant PSUs, so in the case of 1 ceasing to function, then the backup is there

21
Q

What does the Main Board / Motherboard adapter on a PSU do

A

Provides power to the motherboard

22
Q

Which connector provides power to the motherboard

A

Main Board / Motherboard Adapter

23
Q

ATX Motherboard Standard Cable

A

20-Pin Connector

24
Q

ATX 12V Motherboard Power Cable

A

24-Pin Connector

25
Q

CPU Power / Processor Power PSU Cable

A

Has a 4,6 or 8-pin connector. Modern uses 8

26
Q

PCIe sometimes use what cable for additional power?

A

8 pin power cable

27
Q

What does the SATA Power Connector do

A

Used to power the SATA drives

28
Q

What is the Molex Connector used for

A

Used for IDE and PATA hard drivers, CDs and DVD Drives

29
Q

What does the Y Connector do

A

One connector that can support multiple devices

30
Q

What is max V + Type + Name of a US-based PSU. Include a fact about the V

A

120V AC (Low Line Power) - Most of the time the Voltage will be lower than advertised e.g. 110-115 unless you have good clean power

31
Q

What is max V + Type + Name of a EU/Asia based PSU.

A

230V AC (High Line Power)

32
Q

In terms of voltage on PSUs, what is a common function when travelling

A

Supporting multi-voltage outputs

33
Q

What is Voltage Sensing / Dual Voltage Power Supplies

A

Detects the outlet and converts it into the voltage of DC

34
Q

VDC (Volt Direct Current) Types

A

3.3, 5, 12

35
Q

What is a Rail

A

Wire that provides current at a particular voltage

36
Q

What is a 12 VDC Rail

A

Cable or wire that provides 12 VDC

37
Q

Which is the most common rail

A

12 VDC Rail

38
Q

What is Wattage Rating

A

Power Supply’s output capacity or capability

39
Q

Amperage to Wattage

A

A (amps) x V (voltage) = W
I(Current=Amperage) x V = W

40
Q

What incremental increase do PSUs go up in

A

50 or 100 Watts

41
Q

What is a recommendation when buying a PSU

A

Buy a bigger one than what is calculated

42
Q

What happens to the other 30% of a 70% efficient PSU

A

Converted to heat

A+ Sections 1-27 1011 (27 decks)

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