Engine Electrical Systems Flashcards
What are two ways wires can be attached to the pins in a cannon plug? (AM.III.F.K10)
A. By soldering the wires into pots on the pins and sockets
b. By crimping tapered pins onto the wires and inserting the pins into tapered holes in the pins and sockets
Why is stranded wire used rather than solid wire, in most powerplant electrical systems? (AM.III.F.K10)
Solid wire is likely to break when it is subjected to vibration
What two things must be considered in selection of wire size when making an electrical installation in an aircraft? (AM.III.F.K10)
The current carrying capability of the wire
The voltage drop caused by the current flowing through the wire.
What is used to protect a wire bundle from chafing where it passes through a hole in a bulkhead or frame? (AM.III.F.K10)
A grommet around the edges of the hole
How are electrical wires protected where they pass through an area of high temperature? (AM.III.F.K10)
Wires passing through these areas are insulated with high temperature insulation, and the wires are enclosed in some type of protective conduit.
What is the minimum separation allowed between a wire bundle and a fluid line that carries combustible fluid or oxygen? (AM.III.F.K10)
6 inches whenever possible.
If not practical,
the wires should not run parallel into fuel or oxygen lines
and a minimum of two inches must be maintained
Which aircraft electrical circuit does not normally contain a fuse or circuit breaker? (AM.III.F.K10)
The starter motor circuit.
When should aircraft wiring be installed in a conduit? (AM.III.F.K10)
When the wiring passes through an area in the aircraft
where open wiring could likely be damaged, such as through a wheel well.
What is meant by a trip free circuit breaker? (AM.III.F.K10)
One that will trip open even if the ON-OFF mechanism is held in the ON position.
Which way should the toggle of a switch that controls the prop pitch move to place the prop in low pitch(high rpm) ? (AM.III.F.K10)
Forward
Why are protective covers placed over some switches in an aircraft electrical circuit? (AM.III.F.K10)
To prevent the switch from being accidentally actuated.
