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WorksheetsM6.11 Cat A
Total questions: 15
Worksheet time: 8mins
How many conductors does a co-axial cable have?
2
1
3
4
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
What voltage must aircraft electrical cable and wire insulation be resistant to?
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?
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)
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
In crimping what terminations should only be used to terminate aluminium cables?
Aluminium or bimetal (Al-Cu) terminations
Lead and iron terminations
Steel and cobalt terminations
What is the allowable voltage drop across cable with a nominal voltage of 28v
Continuous Op = 0.5v , Intermittent Op = 1v
Continuous Op = 1v , Intermittent Op = 2v
Continuous Op = 4v , Intermittent Op = 8v
Continuous Op = 8v , Intermittent Op = 16v
What is the Maximum continuous rating (Amperes) within a stranded copper wire of 14 AWG OF 7 bunched wires in free air?
36 Amps
10 Amps
17 Amps
2 Amps
What type of cables are used to transmit high voltages in the engine ignition systems?
High tension cables
Low Tension cables
What is the most common used method of cable termination in aircraft electrical and avionics systems?
Co-Axial termination
Soldering termination
Crimped Termination
Bare conductor in clamped terminator
