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Mod 6 > 6.11 > Flashcards

6.11 Flashcards

1
Q

Copper is used for _____ wires

A

Small

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2
Q

Aluminium is used for _____ wires

A

Bigger wires

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3
Q

Plating is used to

A

Increase corrosion resistance and helps crimping connection

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4
Q

Name all Aircraft Power Sources

A

Engine Generator

APU

GPU

RAT

DC Battery

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5
Q

Temp of Tin plating on Copper

A

105 °C

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6
Q

Temp of Silver playing on Copper

A

200 °C

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7
Q

Temp of Nickel Plating on Copper

A

260 °C

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8
Q

Temp of Nickel Clad on Copper

A

260 °C

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9
Q

Aluminium Max Temp

A

105 °C

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10
Q

Two types of Insulator Construction

A

Extrusion

Wrapping

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11
Q

AWG

A

Small Number = Big Wire

Even numbers only

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12
Q

Temperature

A

Cables have a Max Cont Op Temp

Current Causes Heatloss, 40 °C

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13
Q

Wet Arc Tracking

A

Crack in two wires

Water is a conductor and connects both wires

An arc occurs

Water Evaporates ( 1000 °C)

Cracks Grow

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14
Q

Abrasion

A

Friction

Occurs in High Vibration Areas

Can be fixed via Loom Rigidity and Protection

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15
Q

Knuckling

A

Excessive Tension Forces

Can cause a Short

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16
Q

Red Plauge

A

Silver plating on Copper

Damage + Moisture = Red

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17
Q

Glycol Fires

A

Deicing Fluid + Silver = Fire

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18
Q

Poor Solderability

A

Loss of Free tin or plating over time causes wires not being able to be soldered

Fix : Tinned in Prep for Solder

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19
Q

3 classes of Cable

A

Single Core Single Strand

Single Core Multi Strand

Multi Core

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20
Q

What is better per unit of weight

Copper or Aluminium

A

Aluminium

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21
Q

Single Core Single Strand

Parts

A

Annealed / Tinned Copper

PVC or PTFE

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22
Q

Single Core Multi Strand

Parts

A

Annealed / Tinned Copper

PVC or PTFE

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23
Q

Airframe Cables

A

Twisted Shielded Pair

“Open” General Wiring

Need to be Robust and Withstand Environment

Very Thin insulation

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24
Q

Interconnect Cables

A

Twisted Shielded Pair

Avo bay Racks

Thinner than Airframe Cables

Saves weight + space ( more abrasion)

Increased Flex

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25
Q

Equipment Cables

A

Within Equipment or Componets

Very Flexible and suitable for solder to PCBs

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26
Q

Fire Resistant Cable

A

Resistant for 5 mins

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27
Q

Fire Proof Cable

A

Resistant for 15 mins

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28
Q

Twisted Shielded Pair

A

Airframe and Interconnecting

Prevent interference

May have a sheath

Used for Data

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29
Q

Coaxial Cable

A

Radio Cable

Limits Interference

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30
Q

Coaxial Cable Construction

A

Insulation

Metal shield

Dielectric

Core

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31
Q

High Tension Cables

A

High Tension = High Voltage

20,000 to 50,000 volts

Used in Igniter Plugs

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32
Q

EASA CS-25 . 1309

A

Equipment Systems And Installations

Avo Flight Systems and Internal Aircraft Systems

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33
Q

EASA CS-25 . 1353

A

Electrical Equipment and Installation

Used for Generators, Contractors and Heating Units

34
Q

EASA CS-25 . 1355

A

Distribution Systems

Wiring Network

35
Q

EASA CS-25 . 1359

A

Fire and Smoke Protection

36
Q

What are the 2 principal requirements for a wire carrying current

A

Without overheating

Without voltage drop

37
Q

A larger wire can

A

Carry more current

38
Q

Aluminium wires not used below AWG __ and why

A

AWG 6

Too brittle

39
Q

Positive Temp Coefficient

A

As Temp increases Resistance increases

40
Q

Negative Temperature Coefficient

A

As Temp Increases Resistance drops

41
Q

What is Earth Return System

A

Lets aircraft be part of electrical circuit

42
Q

What is used to bond aircraft panels together for Earth Return System

A

Bonding Straps

43
Q

What is terminal removed first when removing battery

A

Negative

44
Q

What does an Anti Corrosion Washer do

A

Prevent Electrolyte Action between Assy

45
Q

Where are Corrosion Washers used

A

Earth points on Structure

46
Q

Where are bus blocks mounted

A

Directly onto airframe

47
Q

AC Neutral and DC Earth cables cannot be

A

Connected to the same earth point

48
Q

Identification of earth points

A

Letter marker on ground wire

ID letter on structure

49
Q

How often are code numbers printed on wires

A

3 inches from terminal

6ft increments after that

Or 150mm to 500mm

Or 2 feet

50
Q

How are code numbers marked on a wire

A

Hot stamping or ID heat shrinks

51
Q

N or GN

A

Ground or Earth

52
Q

V

A

High voltage side of single phase power circuit

53
Q

A B C

A

3 phase AC power

54
Q

A

A

First segment or Power Source

55
Q

What wires cannot be hot stamped

A

High Tension wires

56
Q

What is SWG

A

British Wire Gauge

57
Q

What is the most common type of cable termination

A

Crimped

58
Q

How much must the wire stick out from distortion point in AMP terminals

A

1mm

59
Q

What is a crimp

A

Deliberate distortion of terminal shank to secure terminal to conductor

60
Q

What does the Dot indicate in AMP terminals

A

Correct Tool and Tool Position

61
Q

What AWG size is In AMP is Small Yellow

A

26-22 AWG

62
Q

What AWG size is In AMP is Red

A

22-16 AWG

63
Q

What AWG size is In AMP is Big Yellow

A

12-10 AWG

64
Q

What AWG size is In AMP is Blue

A

16-14 AWG

65
Q

How many dots on Yellow in AMP

A

1

66
Q

How many dots on Red in AMP

A

1

67
Q

How many dots on Blue in AMP

A

2

68
Q

How do AMP tools show the correct tool for the crimp

A

Coloured Handles

69
Q

Where are Inline Splices used

A

To join two cables

70
Q

What is the size limit for In Line Splices

A

Cannot be used on wires bigger than AWG 8

71
Q

What is voltage limit for In line Splices

A

240V AC RMS

72
Q

What types of Cables can Inline splices not be used on

A

Thermocouples

Coaxial Cables

Earth stud or Earth Terminal Block

73
Q

How many connections on One stud of a Bus block

A

Max 4

74
Q

Max angle of connections on Bus Block

A

30 °

75
Q

What size is Pneumatic Crimping tool used for

A

AWG 8 - 4/0

76
Q

What pressure does Pneumatic Crimp tool operate at

A

6-9 Bar

77
Q

What AWG size is Hydraulic Crimping Tools used for

A

AWG 6 to 0000

78
Q

What shape is left after a Hydraulic Crimp

A

Hexagon

79
Q

What are the 6 Letters left after Hydraulic Crimps

A

HH

HG

HN

80
Q

What is the female of a Electrical Connector

A

Receptacle ( Structure / Component)

81
Q

What is the male of a Electrical Connector

A

Plug ( Cable Side)

82
Q

What are the 3 types of Connectors

A

Screwtype

Bayonet

Push pull

Mod 6 (8 decks)

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