PTU BTME102 Engineering Drawing May 2013 Question Paper

BE (First/Second) Semester Exam(Common to all Branches)
Time: 3 hrs
Maximum Marks: 60

Instruction to Candidates:

1. Section A is compulsory.
2. Attempt any five questions from Section B and C.
3. Select atleast Two questions from Section B and Two from Section C.

SECTION A (Marks: 2 each)

1. a) Name the two recommended systems of dimensioning and show any one of them with the help of a sketch.

Ans: Refer article 1.6.2 page 1.10 of Engineering Graphics - Basant Agrawal, TMH.

b) What do you mean by Representative Faction (R.F). Show it by a suitable example?
Ans: Refer article 2.5 page 2.3 of Engineering Graphics - Basant Agrawal, TMH.

c) Name the various types of scales (at least four)
Ans: Refer article 2.4 page 2.3 of Engineering Graphics - Basant Agrawal, TMH.

d) Differentiate between Ist Angle and IIIrd Angle of projections.

Ans: Draw article 5.4.1 and 5.5.1 page 5.6 and 5.8 of Engineering Graphics - Basant Agrawal, TMH.

e) What is meant by Orthographic projections?

Ans: Refer article 5.1 page 5.1 of Engineering Graphics - Basant Agrawal, TMH.

f) Name the two auxiliary planes and write their use.

Ans: Refer article 10.3.3 and 10.3.4 page 10.3 of Engineering Graphics - Basant Agrawal, TMH.

g) Draw the projections of a point l0 mm above HP and 20 mm in front of VP.

Ans: Refer Example 6.1 page 6.3 of Engineering Graphics - Basant Agrawal, TMH.

h) What do you mean by the Trace of a Line. Show it by a sketch.

Ans: Refer article 7.3 page 7.2 of Engineering Graphics - Basant Agrawal, TMH.

i) Name atleast three solids of revolution.

Ans: Refer article 9.4 page 9.4 of Engineering Graphics - Basant Agrawal, TMH.

j) What is Intersection of surfaces and its importance.

Ans: Refer article 14.1 page 14.1 of Engineering Drawing 2e - Basant Agrawal, TMH.

SECTION B (Marks: 8 each)

2. The distance between two cities A and B is 300 kilometers. Its equivalent distance on the map measures only 6 ems. What is the RF? Draw a diagonal scale to show hundreds of kilometres, tens of kilometres and kilometres. Indicate on the scale, the distance of 313 kms.

Ans: Refer Example 2.13 page 2.13 of Engineering Graphics - Basant Agrawal, TMH.

3. A straight line AB is 50 mm long and it makes an angle of 35° with HP. and 45° to VP. The end 'A' is 15 mm in front of VP and 20 mm above HP Draw the projections of the line.

Ans: Similar to Example 7.22 page 7.29 of Engineering Graphics - Basant Agrawal, TMH.

4. Draw the projections of a rhombus having diagonals 100 mm and 40 mm long. The bigger diagonal is inclined at 30° to HP with one of its end point in HP.

Ans: Refer Example 8.25 page 8.32 of Engineering Graphics - Basant Agrawal, TMH.
 
5. Draw the projections of a cylinder 50 mm diameter and axis 60 mm long, is resting on a point of base circle in HP with its axis inclined at 45° to HP and parallel to VP.

Ans: Refer Example 9.9 page 9.15 of Engineering Graphics - Basant Agrawal, TMH.

SECTION C (Marks: 8 each)

6. A cube of 40 mm edges, is resting on one of its face in HP with a vertical face inclined at 30° to VP It is cut by a sectional plane parallel to VP and perpendicular to HP passing 15 mm away from the axis Draw its top view and the sectional front view

Ans: Refer Example 10.6 page 10.10 of Engineering Graphics - Basant Agrawal, TMH.
 
7. Draw the development of a sphere of 60 mm diameter by LUNE method.

Ans: Refer article 13.27 page 13.26 of Engineering Drawing 2e - Basant Agrawal, TMH.
8. Draw the isometric projection of the frustum of a cone having base diameter 50 mm and 40 mm height with top diameter of 25 mm.

Ans: Refer Example 12.8 page 12.12 of Engineering Graphics - Basant Agrawal, TMH.
 
9. Draw the front view of the object shown below in the direction (F) and top view in the direction (T). All dimensions are in mm.

Ans: Refer Chapter 5 of Engineering Graphics - Basant Agrawal, TMH.