1. Answer any seven questions: Size of standard drawing sheet designated A4 size is mm x mm and A3 size is mm x mm. The rivet diameter as per Unwin's formula is when mm is the thickness of riveting plate. In a given thread size "D" mm, the dimension across the comers for a hexagonal nut is mm, and height of the nut is mm. Thread angle for the following threads: Metric threads

(ii) British Whitworth Name the commonly used materials for rivets. (at least two) Name three types of key ways. For drawing smooth curves we use Mini drafter

(ii) Compass

(iii) French curves In metric threads, the metric thread size indicates the diameter of the thread. Name the parts in the knuckle joint.

2. Draw sectional front view and top view for double rivet chain type lap joint. Take
plate thickness as 9 mm. Indicate pitch distance between two rows,
margin; for diameter of rivet. Use Unwin's formula.

OR

Draw hexagonal screw, nut with washer for M30 and length of the screw is 60 mm. Draw two views.

3. Socket and spigot joint is shown in Figure 1.
Draw: Front view (sectional view) Side view
Consider D as =30 mm. <img src='./qimages/11563-3a.jpg'> Draw Sectional front view, and

(ii) Side view for the protected flange coupling shown in Figure 2.
<img src='./qimages/11563-3b.jpg'>