Glossary of terms you will come across during your Phase 2 training.
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## W

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Warrant Officer, a rank in the Irish Naval Service.
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Work is said to be done when a force moves an object through a distance. If we want to quantify or measure the amount of work done, we must know the magnitude (size) of the force applied, and the distance the object was moved.

When carrying out calculations of this nature, we must be careful to use base units, in this case, the metre for distance and the Newton for force.

For example, if the force applied was 20 Newtons, and the distance moved was 1 metre, then the work done is calculated by multiplying the force by the distance.

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You are working a metal when you hit it, bend it, heat it. Take, for example, copper. If you got a length of copper bar and kept bending it back and forth, you are working it. Eventually, the copper will harden at the point where it is bending (where the work is happening). This hardness will cause the copper bar to break at this point. You have work hardened the copper, and that is why it breaks-it becomes hard and brittle, and then cracks and breaks at the point of bending.
 Keyword(s): work harden
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Wide open throttle. Term used in electronic engine managment. This is when an engine is under full load.
 Keyword(s): throttle wide openwide open throttleW.O.T.
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Wrought iron is got by removing the carbon from cast iron.

Wrought iron is very pure, with a ferrite content of 99.95%. The remaining 0.05% is slag, picked up during the smelting process.

Wrought iron is easily bent or twisted when cold, but it has excellent resistance to fracture when subjected to sudden shocks or blows.

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### From their website:

Würth Ireland Ltd. is Ireland's largest distributor of Assembly Techniques and is part of the Würth Group which has over 400 active companies in 86 countries worldwide. Traditionally Würth Ireland has been a direct sales company with 120 sales representatives servicing all 32 counties. The name Würth is synonymous with quality, and this standard was the foundation which led to acquiring their leading position in the market. Their ability to innovate and anticipate along with their excellent service and availability makes them Irelands top supplier to the Woodworking, Construction, Automotive and Metal Industries.

### Sales Representative: Joe Flaherty

Wurth supply us with various items such as the TimeSert thread repair kit. They also supply us with course expendables such as drill bits, nuts, bolts and carburettor cleaner.

Würth have a trade outlet in Finglas, just off the M50, Junction 5. Take this exit and head toward the city.

Satnav coordinates for Finglas Depot:
53°23'50.28"N
6°19'14.16"W

 Keyword(s): wurth Irelandwurth.ieJoe Flahertywurthwuerth
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Cortavacan, Eslin Bridge, Carrick on Shannon, Co. Leitrym.

Company Contact: Miko Wynne, telephone: 071 9631 664

### Apprentices:

 Keyword(s): Wynnes garage

## Y

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Yanmar manufacture engines, and on the phase 2 course, several items such as the spate water pump and the diaphragm water pump use this engine.

This site provides general information and links to technical manuals in pdf format.

## Z

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From their website:

Zama is the world's largest manufacturer of diaphragm carburetors for hand-held outdoor power products. Read More...

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A Zener diode behaves like an ordinary diode up to a certain point. In other words, it acts as a one way electrical valve that allows electricity to flow in one direction only. It does this up to a certain point. However, when voltage acting against the normal flow rises to a certain point, the Zener collapses and conducts freely in both directions. It will continue to do that until the voltage acting against the Zener drops below a given value. Once this happens, the Zener again behaves like an ordinary diode.

Because of this quality, the Zener is especially useful in voltage regulation circuits.

 Keyword(s): Zener

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