09A11291 Set 4: Engineering Drawing (IT, BIO) JUNE - 2010

Code No.: 09A11291 R09 SET-4
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
I B.TECH - REGULAR EXAMINATIONS JUNE - 2010
ENGINEERING DRAWING
(COMMON TO IT, BIO)
Time: 3hours Max.Marks:75
Answer any FIVE questions
All questions carry equal marks
- - -

1(a) Draw comparative scales of RF = 1/485000 to read up to 80 km and 80 versts. 1 verst =1.067 km. [8]
Refer attached supplementary problems of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

Length of kilometre scale, Ls (km)=16.5 cm
Length of verst scale, Ls (verst)=17.6 cm
(b) An inelastic string of 120 mm length has its one end attached to the circumference of a circular disc with a 50 mm diameter. Draw the curve traced out by the other end of the string when it is completely wound round the disc keeping the string always tight. Draw the tangent and normal to the curve at a point 70 mm from the centre of the circular disc. Name the curve. [7]
Refer Problem 6.12, page 6.12 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH
Name of Curve: Involute
For tangent and normal refer problem 6.4, page 6.5 of Engg. Drawing for JNTU-H by Basaant Agrawal, TMH

2. The end A of an 80 mm long line is 20 mm below the H.P. and 30 mm behind the V.P. It is inclined at 60˚ to the H.P. and 30˚ to the V.P. Draw its projections if the other end lies in the first quadrant. [15]
Refer Exercise 9c, Question 9, page 9.58 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

3. A hexagonal prism, having a base with a 30 mm side and a 70 mm long axis, has an edge of the base parallel to the H.P. and inclined at 45˚ to the V.P. Draw its projections when its axis makes 60˚ with the H.P. [15]
Refer Exercise 11c, Question 5, page 11.49 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

4. A cone with a base diameter of 75 mm and a slant height of 75 mm is resting on a point on the circumference of the base on the H.P. The axis of the cone is inclined at 45˚ to the H.P. and parallel to the V.P. The cone is cut by a section plane whose HT passes through the midpoint of the axis and is seen parallel to an extreme generator in the top view. Draw the top view, sectional front view and true shape of the section of the cone. Assume that the apex of the cone is removed. [15]
Refer aatched supplementary problems of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

5. A cone with an 80 mm base diameter and a 100 mm long axis rests on its base on the H.P. It is penetrated by a cylinder with a 50 mm base diameter, the axis of which is parallel to both the principal planes and meets the axis of the cone at a distance of 30 mm above the base. The two axes are 10 mm apart. Draw the projections of the combination and show the curves of intersection. [15]
Refer Exercise 14, Question 30, page 14.29 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

6. A cube with a 60 mm side has square holes of 30 mm side, cut through from all the six faces. The sides of the square holes are parallel to the edges of the cube. Draw the isometric view of the cube. [15]
Refer Exercise 15b, Question 13, page 15.24 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

7. Draw the front view, top view and side view of the object whose isometric view is shown in the Figure 4 below (All dimensions are in mm). [15]
Refer Figure 15.44(a) page 15.21 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

8. A hexagonal prism having 30 mm base side and 70 mm long axis is resting on its face in the GP with the axis inclined at 30˚ to the PP. The station point is 90 mm in front of the PP, 100 mm above GP, and lies in a CP which is at a distance of 70 mm rightwards to the corner nearer to the PP. Draw the perspective view when the corner nearer the observer touches the PP. [15]
Refer Exercise 17, Question 16, page 17.26 of Engg. Drawing for JNTU-H by Basant Agrawal,TMH

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