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Answer any three of the following: (i) Name the type of nut shown and suggest a suitable application for it - Leaving Cert Engineering - Question c - 2016
Question c
Answer any three of the following: (i) Name the type of nut shown and suggest a suitable application for it. (ii) Why is a passive flux required when soldering ele... show full transcript
Worked Solution & Example Answer:Answer any three of the following: (i) Name the type of nut shown and suggest a suitable application for it - Leaving Cert Engineering - Question c - 2016
Step 1
(i) Name the type of nut shown and suggest a suitable application for it.
Answer
The type of nut shown is a locknut. Locknuts are typically used on a shaft or axle where movement or vibration occurs, such as in machinery or automotive applications. They help secure the main nut in place, preventing it from loosening due to vibrations.
Step 2
(ii) Why is a passive flux required when soldering electrical circuits?
Answer
A passive flux is required in soldering to prevent oxidation, which can interfere with the soldering process. Specifically, it acts as a barrier that protects the metal surfaces from reacting with oxygen and forming oxides. This ensures a clean surface for soldering, thus promoting better adhesion of the solder to the components.
Step 3
(iii) Outline two advantages for using spot welding to join metals.
Answer
- Efficient Joining: Spot welding provides a strong welded joint, especially suitable for light gauge metals, and is highly efficient for mass production.
- Automation: Spot welding is easily automated, making it suitable for high-volume manufacturing environments, which reduces labor costs and increases productivity.
Step 4
(iv) What is the difference between a permanent joint and a temporary joint?
Answer
A permanent joint cannot be disassembled without damaging the materials involved, typically requiring processes like welding or gluing. On the other hand, a temporary joint can be easily disassembled with simple tools, such as machine screws or nuts, allowing for maintenance and modifications.