a) The distance between two stations is 100 km and on a road map it is shown by 30 cm. Draw a diagonal scale and indicate 46.8 km and 32.4 km on it. (Unit 1)

b) Draw an epicycloids, given that radii of generating and directing circle as r = 20 mm and R = 72 mm respectively. Also draw a normal and tangent at any point on the curve. (Unit 1)

a) A thread is unwinds itself from a cylindrical drum of 60 mm in radius. Draw the locus of the free end of the thread for unwinding through an angle of 180°. (Unit 1)

b) Differentiate between the first angles and third angles projection. (Unit 2)

a) A line AB 120 mm long is inclined at 45° to HP and 30° to the VP. It's midpoint P is in VP and 20 mm above HP. The end A is in the third quadrant and B is in the first quadrant. Draw the projections of the line AB. (Unit 2)

b) Explain layering concept with examples. How is it implemented in CAD software? (Unit 5)

a) Draw the projections of a regular hexagon of 25 mm side having one of its sides in the H.P. and inclined at 60° to the V.P. and its surface making an angle of 45° with the H.P. (Unit 2)

b) Draw the projections of a rhombus having 100 mm and 40 mm long diagonals. The bigger diagonal is inclined at 30° to H.P. with one of the end point in H.P. an the smaller diagonal is parallel to both the planes. (Unit 2)

A right pentagonal prism 90 mm high with each side of the base 30 mm is resting on one of the base edges on the horizontal plane and inclined at 30° to V.P. and the face containing that edge is inclined at 45° to the H.P. Draw the projections of the pentagonal prism. (Unit 3)

A right regular cylinder 50 mm diameter of base and 65 mm long lies on one of its generators, on the H.P. with its axis inclined at 30° to the V.P., cuts the cylinder and bisects its axis. Draw the apparent and true sections of the solid. (Unit 4)

a) A right cylinder of 30 mm diameter and 35mm height of axis, inclined at 30° to H.P. and passes 18 mm from base along the axis. Draw the development of the truncated cylinder. (Unit 4)

b) A square pyramid rests centrally over a cylindrical block. Draw the isometric projection of the arrangement. Consider the pyramid has a base with 25 mm side and 40 mm long axis whereas the cylindrical block has a base with 50 mm diameter and 20 mm thickness. (Unit 5)

Write short notes on the following (any two): (Unit 5)
i) Modify commands
ii) Building Information Modeling (BIM)
iii) Isometric and orthographic projection