09A11291 Set 1: Engineering Drawing (IT, BIO) JUNE - 2010

Code No.: 09A11291 R09 SET-1
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 a Vernier scale of 1:72 to read inches and long enough to measure 12 yards. Show the following distances on it: (i) 1 yard 1 foot and 1 inch, (ii) 7 yards 2 feet and 9 inches, and (iii) 10 yards 10 inches. [8]
Refer attached supplementary problems of Engg. Drawing for JNTU-H by Basant Agrawal, TMH
Ls=1/72×12×3×12=6 inches=15.24 cm
1 yards 1 foot 1 inch = 121 inches – 6 feet
7 yards 2 feet and 9 inches = 7 yards + 0 foot + 33 inches
10 yards 10 inches = 9 yards + 2 feet + 22 inches
(b) Draw the path traced out by a point on the circumference of a circle but opposite to the contact point. The circle rolls without slipping vertically downwards for the distance equal to its perimeter. The diameter of the circle is 40 mm. Name the curve. [7]
Refer Problem 6.1, figure 6.1, page 6.2 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH
Name of the curve: Cycloid

2. The end A of a line AB is in H.P and 25 mm behind V.P. The end B is in the V.P. and 50 mm above H.P. The distance between the end projectors is 75 mm. Draw the projections of AB and determine its true length. [15]
Refer Refer Exercise 9c, Question 8, page 9.58 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

3. An isosceles triangular plane ABC with a 70 mm base and altitude 80 mm has its base in the H.P. and inclined at 45˚ to the V.P. The corners A and C are in the V.P. Draw its projections and determine the inclination of the plane with H.P. [15]
Refer Refer Exercise 10c, Question 6, page 10.39 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

4. A cylinder has its axis horizontal and inclined at 60˚ to the V.P. An A.V.P. cuts it such that the true shape of the section is an ellipse with a major axis of 100 mm and a minor axis of 65 mm. Draw the top view, sectional front view, and true shape of the section. The length of the cylinder is 105 mm. [15]
Refer Problem 12.49, Figure 12.54, page 12.42 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

5. A vertical cone having an 80 mm base diameter and a 100 mm long axis is penetrated by a horizontal cylinder with a 45 mm diameter, the axis of which is 30 mm above the base of the cone, parallel to the VP and 5 mm away from the axis of the cone. Draw the three views showing the curves of intersection. [15]
Refer Problem 14.15, Figure 14.17, page 14.18 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

6. A sphere with a 50 mm diameter rests centrally over a cube with a 60 mm side. Draw its isometric projection. [15]
Refer Exercise 15b, Question 7, page 15.23 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 1 below (All dimensions are in mm). [15]
Refer Figure 15.38b. Solution Fig 15.38(a) page 15.39 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

8. Draw the perspective view of a pentagonal plane with a 30 mm long side perpendicular to the PP. It is placed on GP with its centre 50 mm behind PP. The station point is 50 mm in front of the PP, 65 mm above GP, and lies in a CP which is at a distance of 50 mm to the right of the centre of the pentagon. [15]
Refer Exercise 17, Question 7, page 17.25 of Engg. Drawing for JNTU-H by Basant Agrawal, TMH

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