Mod 6 > 6.11 > Flashcards

6.11 Flashcards

(82 cards)

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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
Equipment Cables
Within Equipment or Componets Very Flexible and suitable for solder to PCBs
26
Fire Resistant Cable
Resistant for 5 mins
27
Fire Proof Cable
Resistant for 15 mins
28
Twisted Shielded Pair
Airframe and Interconnecting Prevent interference May have a sheath Used for Data
29
Coaxial Cable
Radio Cable Limits Interference
30
Coaxial Cable Construction
Insulation Metal shield Dielectric Core
31
High Tension Cables
High Tension = High Voltage 20,000 to 50,000 volts Used in Igniter Plugs
32
EASA CS-25 . 1309
Equipment Systems And Installations Avo Flight Systems and Internal Aircraft Systems
33
EASA CS-25 . 1353
Electrical Equipment and Installation Used for Generators, Contractors and Heating Units
34
EASA CS-25 . 1355
Distribution Systems Wiring Network
35
EASA CS-25 . 1359
Fire and Smoke Protection
36
What are the 2 principal requirements for a wire carrying current
Without overheating Without voltage drop
37
A larger wire can
Carry more current
38
Aluminium wires not used below AWG __ and why
AWG 6 Too brittle
39
Positive Temp Coefficient
As Temp increases Resistance increases
40
Negative Temperature Coefficient
As Temp Increases Resistance drops
41
What is Earth Return System
Lets aircraft be part of electrical circuit
42
What is used to bond aircraft panels together for Earth Return System
Bonding Straps
43
What is terminal removed first when removing battery
Negative
44
What does an Anti Corrosion Washer do
Prevent Electrolyte Action between Assy
45
Where are Corrosion Washers used
Earth points on Structure
46
Where are bus blocks mounted
Directly onto airframe
47
AC Neutral and DC Earth cables cannot be
Connected to the same earth point
48
Identification of earth points
Letter marker on ground wire ID letter on structure
49
How often are code numbers printed on wires
3 inches from terminal 6ft increments after that Or 150mm to 500mm Or 2 feet
50
How are code numbers marked on a wire
Hot stamping or ID heat shrinks
51
N or GN
Ground or Earth
52
V
High voltage side of single phase power circuit
53
A B C
3 phase AC power
54
A
First segment or Power Source
55
What wires cannot be hot stamped
High Tension wires
56
What is SWG
British Wire Gauge
57
What is the most common type of cable termination
Crimped
58
How much must the wire stick out from distortion point in AMP terminals
1mm
59
What is a crimp
Deliberate distortion of terminal shank to secure terminal to conductor
60
What does the Dot indicate in AMP terminals
Correct Tool and Tool Position
61
What AWG size is In AMP is Small Yellow
26-22 AWG
62
What AWG size is In AMP is Red
22-16 AWG
63
What AWG size is In AMP is Big Yellow
12-10 AWG
64
What AWG size is In AMP is Blue
16-14 AWG
65
How many dots on Yellow in AMP
1
66
How many dots on Red in AMP
1
67
How many dots on Blue in AMP
2
68
How do AMP tools show the correct tool for the crimp
Coloured Handles
69
Where are Inline Splices used
To join two cables
70
What is the size limit for In Line Splices
Cannot be used on wires bigger than AWG 8
71
What is voltage limit for In line Splices
240V AC RMS
72
What types of Cables can Inline splices not be used on
Thermocouples Coaxial Cables Earth stud or Earth Terminal Block
73
How many connections on One stud of a Bus block
Max 4
74
Max angle of connections on Bus Block
30 °
75
What size is Pneumatic Crimping tool used for
AWG 8 - 4/0
76
What pressure does Pneumatic Crimp tool operate at
6-9 Bar
77
What AWG size is Hydraulic Crimping Tools used for
AWG 6 to 0000
78
What shape is left after a Hydraulic Crimp
Hexagon
79
What are the 6 Letters left after Hydraulic Crimps
HH HG HN
80
What is the female of a Electrical Connector
Receptacle ( Structure / Component)
81
What is the male of a Electrical Connector
Plug ( Cable Side)
82
What are the 3 types of Connectors
Screwtype Bayonet Push pull

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