1. Define how
we can find the wire size by knowing the American wire gauge AWG and matric methods.
Answer: There are two standards for wire gauge. American Wire Gauge AWG
and Standard Wire Gauge SWG or matric. These standards define wires according
to their diameter. They give numbers to different diameter of wires. The bigger
the number, the lesser the diameter of wire. For example wire gauge 12 wire
would be thicker than wire gauge no.22.
1.
What
is component locator and why it is used.
Answer: Component locator is information detail for a certain system and
it shows the physical location of the different components used in that system.
2.
Define
how the wire resistance is affected by temperature.
Answer: with the increase
in temperature the resistance of a wire also increased. This is known as
positive temperature coefficient. Some materials resistance decreases with the
increase in temperature.
3.
Describe
the three factors affecting the wire size.
Answer: they are a. length
of the wire. B. vibration the wire will be exposed to. C. the temperature of
wire.
4.
Why
printed circuit boards are used.
Answer: printed circuit
board give ease of circuit design. It simplify the circuit wiring. With the
printed circuit board mass production is easy.
5.
Describe
the use of single strand wire and mutlistanded wire.
Answer: Single strand wire
is used where is less current flow and the wire is not subjected to substantial
vibration. Whereas the mulistanded wire is used where there is a huge current
flow through wire and flexibility is required and where there is vibration.
6.
Why
circuit diagrams are used.
Answer: circuit diagrams
are very useful and powerful tools for service engineer and for service
technician as they provide help locating wiring interconnections between
components and also they provides details of powers and grounds.
7.
What
is simple and complex wiring harness
Answer: Simple wiring
harness serves single or less circuits. Complex wire harness serves for several
circuits.
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