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Explain any two of the terms: Pulley drive, Printed circuit board (PCB), Worm gear, Plug gauge. - Leaving Cert Engineering - Question 1 - 2008
Question 1
Explain any two of the terms: Pulley drive, Printed circuit board (PCB), Worm gear, Plug gauge.
Worked Solution & Example Answer:Explain any two of the terms: Pulley drive, Printed circuit board (PCB), Worm gear, Plug gauge. - Leaving Cert Engineering - Question 1 - 2008
Step 1
Pulley drive
Answer
A pulley drive is a mechanical system used to transmit motion and force from one shaft to another by means of pulleys and belts. This system is common in various household machines such as sewing machines and spin dryers, which are often driven by round grooved pulleys. Additionally, machine tools like drilling machines and lathes utilize pulley drives to facilitate efficient power transmission.
Step 2
Printed Circuit Board (PCB)
Answer
A Printed Circuit Board (PCB) is typically a thin, rigid substrate, usually about 1.6mm thick, covered with a layer of copper on one side. The copper is either left intact or etched away to create paths that allow electrical connections between the components. Components are soldered onto the pads created on the PCB, which connect the various electronic parts to ensure functionality and reliability in electronic devices.