## Combined First and Second Semester B.Tech. Degree Examination, May 2009

## (2008 Scheme)

## 08-104 : ENGINEERING GRAPHICS (MNHTAB)

**Instruction : Answer any two questions from each Module**

**MODULE – I**

1. A wire unwinds itself from a drum of 50 mm radius. Draw the locus of the free

end of the wire for unwinding through an angle of 360°. Draw a tangent and

normal at any point on the curve.

2. Draw one convolution of a logarithmic spiral, given the shortest radius as 1.5 cm

and ratio of radius vectors enclosing an angle of 30° as 7 : 6. Draw tangent and

normal at any point on the curve.

3. A line PQ, 75 mm long has its end P in HP and Q in VP. The line is inclined at

45° to VP and 40° to HP. Draw the projections and locate the traces.

**MODULE – II**

of its corners on HP such that the base is inclined at angle of 60° to HP and one

side of base is perpendicular to VP. Draw its projections.

5. A hexagonal pyramid, base 30 mm side and axis 65 mm long, is resting on its

base on the ground with two edges parallel to VP. It is cut by a section plane

perpendicular to VP inclined at 45° to HP and intersecting the axis at a point 25 mm

above the base. Draw the front view, sectional plan, sectional side view and true

shape of the section.

6. A thin lamp shade is in the form of a frustum of a cone with its larger end 180 mm

diameter, smaller end 60 mm diameter and height 135 mm. Draw its development.

**MODULE – III**

the circular face touching the top of cylindrical shank of diameter 44 mm and

length of 75 mm. Draw the isometric projection of the rivet.

8. Two ducts of square cross-section are joined together with their axes at right

angles. The vertical duct has a side of 50 mm and the horizontal duct has a side of

40 mm. All the faces of both the duct are equally inclined to V.P. Draw the

projections, showing the lines of intersection of the surfaces of the ducts.

9. A rectangular block 3 cm × 2 cm × 5.5 cm is lying on the ground plane. A

vertical edge is in the PP and the larger face containing that edge makes an angle

of 30° with the PP. The station point is 5 cm in front of the PP, 3 cm above the

ground plane and lies in a central plane which passes through the centre of the

block. Draw the perspective view of the block.

–––––––––––––––––––