How many conductors does a co-axial cable have?

• 2

• 1

• 3

• 4

Answer explanation

They have 2 conductors insulated from each other. The main transmission, or inner conductor and an earthing/grounding screen, known as the shield.

What is the information that is marked on wires and cables before their installation in the aircraft?

• The manufacturer's part number and installation functionality or system markings.

• Only the wire identification marking.

• No marking is allowed in case of insulation damage.

• Just the manufacture's part number clearly showing the conductor gauge.

Which of these American Wire Gauge (AWG) sizes has the largest conductor diameter?

• 6

• 10

• 20

• 24

Tags

CCSS.6.RP.A.3B

What voltage must aircraft electrical cable and wire insulation be resistant to?

• 800 volts
• 300 volts
• 100 volts
• 600 volts

What is the purpose of wire shielding?

• To protect against external erratic signals or electro-magnetic interference.

• To provide a low resistance return path for the single wire system.

• To protect against damage and provide good wire continuity.

What is the definition of a wire?

• An isolated single solid conductor or stranded conductor, surrounded by insulation.

• A group of two or more conductors surrounded by insulation.

• An isolated, bare copper conductor.

Which cable provides system protection from any external Radio Frequency Interference or magnetic interferences?

• Unshielded cable
• Tinned copper cable

• Co-axial Cable

What is meant by the term of a 'wire harness'?

• Multiple insulated wires that are bound together with lacing tape, metal bands, or another form of restriction

• Two or more wires that are insulated separately within the same outer insulation

• One or more wires that are insulated separately within the same outer insulation

What is the approx diameter of an 18 gauge wire in the American wire gauge system?

• 1mm (0.04 in)

• 
  2mm (0.08 in)

• 3mm (0.12 in)

Tags

CCSS.2.MD.A.2

What is the voltage rating of an Efglas cable?

• 600 volts RMS at 1600 Hz,

• 
  600 volts RMS AT 1500 Hz

• 600 volts RMS at 1700 Hz