MOD 1 -2

Question 1

Describe aircraft wire properties in detail

Answer 1

Stranded copper, tined with tin, silver or nickel, and insulated with Teflon

Question 2

What does AWG stand for?

Answer 2

American wire gauge (AWG)

Question 3

When the AWG number gets bigger the wire gets ______ and can carry less ______.

Answer 3

Smaller- Current

Question 4

there are 3 standard colors and associated wire sizes of ring terminals and splices commonly use in aircraft wiring. List the 3 colors and the size of wire each one is made to be used on:

Answer 4

RED 22-16 AWG

Blue 16-14AWG

Yellow 12-10AWG

Question 5

Most wire you will be using on aircraft will be between 24AWG and 10AWG, if you were to repair a broken wire on an aircraft system that was 20 AWG, what color splice would you use? ____, and how many broken strands are you allowed after you strip the wire? ____.

Answer 5

Red-None

Question 6

______ and ______ are used as contacts inconnectors.

Answer 6

pins and sockets

Question 7

Aircraft wire must be _____ to identify it in the circuit.

Answer 7

Marked

Question 8

Ringing out a wire is used to test for ______

Answer 8

Continuty

Question 9

Most aircraft wire is coated in ____ to prevent corrosion.

Answer 9

tin

Question 10

____ terminals are crimped onto wire.

Answer 10

ring

Question 11

In a wiring circuit, this is used as a remote switch

Answer 11

relay

Question 12

Used to measure wire

Answer 12

circular mil

Question 13

The _____ the wire gauge number, the ______it is.

Answer 13

Bigger - smaller

Question 14

In a wiring install, a __________ is used for circuit protection.

Answer 14

Circuit Breaker

Question 15

Solder Sleeves are used on _____ wire

Answer 15

shielded

Question 16

Can be either solder or crimp type, this is connector in a wiring circuit.

Answer 16

Cannon plug

Question 17

Type of knot used to secure a wire bundle.

Answer 17

clove hitch

Question 18

An ______ load operates for less than 2 minutes.

Answer 18

intermittent

Question 19

What are the two types of electricity we use ____and _____

Answer 19

AC and DC

Question 20

What electronic instrument do we use to look at AC wave forms?

Answer 20

Oscilloscope

Question 21

What is RMS?

Answer 21

Roots Mean Square

Question 22

List one way we make AC on an aircraft

Answer 22

Generator, inverter

Question 23

What frequency is the AC used in North America?

Answer 23

60hz

Question 24

What is the frequency of the AC used on Aircraft?

Answer 24

400 hz

Question 25

How do you convert Vpp to Vp?

Answer 25

Vp=1/2 Vpp

Question 26

How do you convert Vp to VRMS?

Answer 26

Vrms= VpXsin45, or Vrms= Vpx.707

Question 27

``` If I use my Digital Multimeter to measure AC voltage, what unit will it be in? A) Vpp B)Vp C)VRMS D) DC ```

Answer 27

C)VRMS

Question 28

What is the relationship between RMS and DC Voltages?

Answer 28

Same average power in a resistive load

Question 29

What are the two types of oscilloscopes?

Answer 29

Analog and digital

Question 30

An oscilloscope will show you how long an AC cycle takes in time, how do you convert this to frequency?

Answer 30

Freq=1/period or f-1/T

Question 31

On an Oscilloscope the UP/Down or Vertical scale gives us?

Answer 31

Voltage

Question 32

On an oscilloscope the LEFT/RIGHT or Horizontal scale gives us?

Answer 32

time

Question 33

``` When looking at a DC voltage on an oscilloscope it will show up as? A) Nothing scopes are for AC B) a flat line in the center C) A straight line 2 divisions up D) Depends on how the scope is set up ```

Answer 33

D) Depends on how the scope is set up

Question 34

The most effective way to measure AC voltage.

Answer 34

RMS

Question 35

One _____ is equal to 1 cycle per second.

Answer 35

HERTZ

Question 36

Half of one cycle of alternating current.

Answer 36

Alternation

Question 37

The Angular distance an AC voltage or current has moved from 0 degrees in a positive direction.

Answer 37

phase

Question 38

Phase ______ representation is using a phaser diagram

Answer 38

domain

Question 39

The most voltage is induced when _____ to the lines of flux.

Answer 39

perpendicular

Question 40

Voltage = peak volatge x Sin Angle.

Answer 40

instantaneous

Question 41

Measured in Hertz.

Answer 41

frequency

Question 42

______ domain representation is used by an oscilloscope to show an AC wave form

Answer 42

time