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Explain any two of the following: Printed Circuit Board (PCB), Rack and pinion, Parting-off tool, Variable resistor. - Leaving Cert Engineering - Question 1 - 2018
Question 1
Explain any two of the following: Printed Circuit Board (PCB), Rack and pinion, Parting-off tool, Variable resistor.
Worked Solution & Example Answer:Explain any two of the following: Printed Circuit Board (PCB), Rack and pinion, Parting-off tool, Variable resistor. - Leaving Cert Engineering - Question 1 - 2018
Step 1
Printed Circuit Board (PCB)
Answer
A Printed Circuit Board (PCB) is a thin board made of fiberglass, composite epoxy, or other insulating materials. It features conductive pathways that are etched or 'printed' onto the board to connect various electronic components such as transistors, resistors, and integrated circuits. PCBs serve as the foundation for both desktop and laptop computers, facilitating the functionality and integration of the electronic components.
Step 2
Rack and pinion
Answer
The rack and pinion is a mechanical system that converts rotational motion into linear motion. It consists of a pinion gear, which rotates, and a linear gear, called the rack, which moves in a straight line. When the pinion rotates, it causes the rack to move in a predetermined linear path. This mechanism is commonly used in steering systems of vehicles and in various machinery to provide precise movement control.