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Explain any two of the following: Engraving, Printed circuit board (PCB), Parting-off tool, Lacquering. - Leaving Cert Engineering - Question 1 - 2011
Question 1
Explain any two of the following: Engraving, Printed circuit board (PCB), Parting-off tool, Lacquering.
Worked Solution & Example Answer:Explain any two of the following: Engraving, Printed circuit board (PCB), Parting-off tool, Lacquering. - Leaving Cert Engineering - Question 1 - 2011
Step 1
Engraving
Answer
Engraving is a process of cutting designs or text into metal surfaces using sharp tools. Various shaped tools may be employed to create a range of designs. Power tools are frequently utilized for engraving letters and numbers on ornamental objects. The precision provided by engraving makes it highly suitable for creating intricate designs that can greatly enhance the aesthetic appeal of metal surfaces.
Step 2
Printed circuit board (PCB)
Answer
A printed circuit board (PCB) is typically a plastic board approximately 1.6mm thick, layered with a thin layer of copper on one side. The copper is intentionally etched away to form paths and strips that facilitate electrical connections between various components. These components are then soldered onto the pads. Moreover, the PCB has strips that enable the current to flow from one component to another, ensuring the functionality of the circuit.