Unit 201 Outcome 4 Aircraft Cables

Which 2 metals are most commonly alloyed to make soder

• Tin and Lead

• Aluminium and Nickel

• Tungsten and Aluminium

Which one of the following would indicate an incorrectly crimped electrical pin?

• Evenly spread indentations on crimp pattern

• Cable entry end of connection barrel tight

• Conductor not visible in the inspection hole

What is the primary purpose of using flux when soldering electrical connections?

• To remove oxidation from metal surfaces

• To increase the melting point of solder

• To strengthen the wire mechanically

Which of the following is a sign of a cold solder joint?

• Shiny and smooth surface

• Dull and grainy appearance

• Uniformly melted solder

What tool is commonly used to strip insulation from electrical wires before crimping or soldering?

• Stanley Knife

• Crimping Tool

• Wire stripper

What is the purpose of a 'Firewire'

• To detect a fall in temperature caused by engine failure will cause the firewire to conduct electricity which will activate the appropriate warnings.

• To detect a rise in temperature caused by fire, this will cause the firewire to conduct electricity which will activate the appropriate warnings.

• To extiguish the fire in an engine or APU area

Polyimides in Kapton cables become volatile when bare wire is exposed is known as?

• Flashover

• Circuit flooding

• Breakout

Reduced heat dissipation leads to higher operating temperatures leads to what?

• No change to the current-carrying capacity of each cable

• Higher current-carrying capacity of each cable

• Lower current-carrying capacity of each cable

What is the most likely consequence of using excessive heat when soldering electrical connections?

• Damage to insulation and components

• Improved electrical conductivity

• Stronger mechanical bond

Which of the following is a recommended practice when crimping electrical connectors?

• Use the correct size crimping tool for the connector

• Twist the wire before inserting into the barrel

• Apply solder after crimping