Comment: This is one of the tough paper as it is out of trend. Few questions are out of syllabus too. Lenient valuation is needed to get above 70% passing result.
BE (First/Second) Semester Exam
(Common
to all Branches) (Grading System)
Time:
3 hrs
Maximum
Marks: 70
Minimum
Marks: 22 (D Grade)
Note: (i) All questions are to be attempted with internal choices. (ii) Assume suitable data, if missing.
Unit-I
1. a) Draw a triangle havng sides 5 cm, 6 cm and 9 cm long respectively. Construct a scale of chords showing 5° divisions to measure the angles of the triangle . 7 Marks
Refer Article 4.17 and 4.18 Page 4.23 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
1. b) Draw an ellipse passing through points A, B and C. Points A and B are 100 mm apart, point C is 75 mm from A and 65 mm from B. 7 Marks
Problem 5.37, Page 5.29 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
OR
1. b) A disc in the form of a square of 35 mm side is surmounted by semicircles on the two opposite sides. Draw the path of the end of the string, unwound from the circumference of the disc.
7 Marks
Problem 6.11 Page 6.10 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
Unit-II
2. a) How convergent projection differs from parallel projection? 2 Marks
Article 17.1
page 7.1 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
2. b) State the position of the point if its both views lie on the reference line. 2 Marks
Article 8.11
page 8.7 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
2. c) Differentiate between first angle and third angle projection system. 3 Marks
Article 7.7 and 7.9
page 7.5 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
OR
2. d) A line measures 100 mm. The projectors through its V.T. and end A are 40 mm apart. The point A is 30 mm above the H.P. and 20 mm in front of the V.P. The V.T. is 10 mm below H.P. Draw the projections of the line and determine its H.T. and the inclination with H.P. 7 Marks
Problem 15
page 9.58 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
2. d) A and B ate two points in the space. The point A is in the V.P., and 24 mm above the H.P. point B is in the H.P. and 36 mm in front of the V.P. The point A is 54 mm away from B. Draw the top view and front view of the straight line AB and also determine the true inclinations of the line with the H.P. and the V.P. respectively. 7 Marks
Example 9.24 Page 9.27 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
Unit-III
3. a) A hexagonal lamina of 24 mm side has its surface inclined at 30° to H.P. Its one side is lying on the H.P. and inclined at 45° to V.P. Draw its porojections. 7 Marks
Problem 3 Page 10.26 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
3. b) A hexagonal prism, side of base 20 mm and axis 60 mm long lies with one of its longer edges on H.P. and inclined at 45° to V.P. Draw its porojections. 7 Marks
Example 11.4 Page 11.8 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
OR
3. b) A pentagonal pyramid, side of base 25 mm and height 60 mm has one of its slant faces on the H.P. and the edge of the base contained by that slant face makes an angle of 30° to the V.P. Draw its projections. 7 Marks
Problem 11 Page 11.50 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
Unit-IV
4. a) A square prism, with a base
side 45 mm and an axis length 90 mm, is resting on a longer edge on the H.P. A
rectangular face through that edge is inclined at 30° to the H.P. The axis of the
prism is perpendicular to the V.P. an A.V.P. inclined at 70° to the V.P. and
passing through the midpoint of the axis cuts the prism. Draw the top view,
sectional front view and sectional side view of the prism. 7 Marks
Example 12.2 Page 12.5 (made mirror, upside down) of ED first edition - Basant Agrawal, CM Agrawal - TMH.
4. b) A hexagonal pyramid, side of base 60 mm and length of the axis 140 mm is kept on the ground on its base. It is cut by an A.I.P. inclined at 45° to the base and cutting the axis at 94 mm from the apex. Draw the development of the lateral surfaces of the pyramid. 7 Marks
Example 13.10(b) Page 13.10 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
OR
4. b) A right circular vertical
cylinder of 44 mm diameter and height 60 mm rotates uniformly. A plotter pen
tip moves vertically at uniform speed on the surface of the cylinder from
bottom to the top, so it moves 60 mm while the cylinder completes one rotation.
Draw the line marked on the cylinder in the front view and measure the true
length of it. 7 Marks
Problem 13.43 Page 13.38 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
Unit-V
5. a) What is layering? 2 Marks
5. b) List the Utility commands. 2 Marks
Article 18.14 Page 18.12 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
5. c) What are the Advantages of
CAD. 3 Marks
Problem 1 page 18.44 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
5. d) A pentagonal prism of side of
base 25 mm and axis 50 mm long, is resting on its base on
H.P. with an edge of its base (away from the observer) parallel to the
V.P. A section plane perpendicular
to the V.P. and inclined at 45° to the H.P., passing through a point on the axis at
40 mm above the base. Draw the isometric projection of the truncated
portion of the prism? 7 Marks
Problem 9 page 15.23 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
OR
5. d) A cylinder 50 mm diameter and 60
mm height stands on
H.P., A section plane perpendicular to the V.P. and inclined at 55° to the
H.P., cuts the
cylinder and passes through a point on the axis at a height of 45 mm above the
base. Draw the
isometric projection of the truncated portion
of the cylinder, when the cut surface is clearly visible to the observer. 7 Marks
Draw Fig. 12.12(a) page 12.10 of ED first edition - Basant Agrawal, CM Agrawal - TMH.
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