Day 2 Progress Check: Wiring Identification

Question 1

1.
What is the primary purpose of shielding in shielded cables?

Answer 1

To prevent electromagnetic interference (EMI)

Question 2

2.
Which material is commonly used for plating aircraft wires to prevent oxidation and improve soldering ability?

Answer 2

Tin

Question 3

3.
The American Wire Gauge (AWG) system is used to:

Answer 3

Define the diameter of a wire, where a larger number corresponds to a smaller diameter

Question 4

4.
When selecting aircraft wiring, which of the following is a primary factor that determines wire size?

Answer 4

The mechanical strength needed to support service conditions

Question 5

5.
Why is it critical to avoid using aluminum wire in high-vibration areas or where frequent connections and disconnections occur?

Answer 5

Aluminum wire is prone to breaking under vibration

Question 6

6.
When selecting insulation materials for use in engine compartments, which characteristic is most critical?

Answer 6

Heat resistance

Question 7

7.
Insulation on high-tension wires, such as those used for ignition leads, is thicker than that on low-tension wires primarily because:

Answer 7

High-tension wires operate at much higher voltages, requiring more insulation to prevent arcing

Question 8

8.
Which of the following methods is recommended for marking wires in modern aircraft with ultra-thin insulation?

Answer 8

Laser Printer

Question 9

9.
Why is it important to retain the original wire marking code when installing new wires?

Answer 9

To maintain consistency and avoid confusion during maintenance

Question 10

10.
In wire marking, identification labels should be placed at what intervals along the length of the wire?

Answer 10

Every 12 to 15 inches

Question 11

11.
Which type of aircraft wiring is best suited for carrying large amounts of current over long distances?

Answer 11

Aluminum wiring

Question 12

12.
What is the primary advantage of using a single wire grounded circuit in an aircraft?

Answer 12

It saves weight by using the aircraft structure as the return path

Question 13

13.
MIL-W-22759 wiring is recommended for post-1990 aircraft because it:

Answer 13

Is insulated with Teflon, providing better thermal resistance

Question 14

14.
When determining wire size using a wire gauge chart, if the imaginary line falls between two numbers, which wire size should be selected?

Answer 14

The larger gauge number

Question 15

15.
Which of the following factors directly affects the allowable current in a wire?

Answer 15

The external heat sources and insulation type