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Explain any two of the terms: Self-locking nut, Electrical insulator, Bevel gear, Cam and follower. - Leaving Cert Engineering - Question 1 - 2009
Question 1
Explain any two of the terms: Self-locking nut, Electrical insulator, Bevel gear, Cam and follower.
Worked Solution & Example Answer:Explain any two of the terms: Self-locking nut, Electrical insulator, Bevel gear, Cam and follower. - Leaving Cert Engineering - Question 1 - 2009
Step 1
Self-locking nut
Answer
A self-locking nut contains a nylon insert which the screw thread cuts into, holding the nut secure. This nylon insert prevents the nut from loosening due to vibration, making it an essential component in applications where the joint must remain tight under dynamic conditions. Its design enhances the reliability and stability of assemblies.
Step 2
Electrical insulator
Answer
An electrical insulator is a material that offers high resistance to current flow. For example, plastic is a common electrical insulator as it does not allow electricity to pass through. This characteristic is critical in electrical applications to prevent short circuits and ensure safety by isolating conductive materials.