Q1: Which of the following is preferred for rivetting ?

ANS:B - Butt joint

A butt joint is a type of joint in which the ends of two materials are joined together without any overlap. In other words, the two materials are aligned end-to-end, with their edges touching or nearly touching. The joint may be secured using various methods such as welding, brazing, adhesive bonding, or mechanical fastening (e.g., riveting or bolting). Butt joints are commonly used in various applications across industries such as metalworking, woodworking, and construction. They are particularly useful when a clean and flush appearance is desired, as the joint does not have any overlapping material that may protrude or create a gap. However, butt joints typically provide less mechanical strength compared to other types of joints, such as lap joints or T-joints, because they have a smaller bonding area. Therefore, additional reinforcement or strengthening may be necessary, depending on the specific requirements of the application. In summary, a butt joint is a simple and straightforward method of joining two materials end-to-end, without any overlap, often used when a flush and neat appearance is desired, though it may require additional reinforcement to achieve adequate strength depending on the application.