PTU BTME102 Engineering Drawing Dec 2011 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) How do we classify lettering and state what is GOTHIC LETTERING.

Ans: Refer article 7.5 page 7.3 of ED - Basant Agrawal, TMH.

b) Name the systems of dimensioning and show one of them with free hand Drawing.
Ans: Refer Fig. 7.9(b) page 7.8 of ED - Basant Agrawal, TMH.

c) Name the different sizes of scale and give example of enlarging scale.
Ans: Refer article 11.2 page 11.2 of ED - Basant Agrawal, TMH.

d) What do you mean by ORTHOGRAPHIC projections?

Ans: Draw article 2.5 page 2.3 of ED - Basant Agrawal, TMH.
e) Draw free hand the Isometric scale.

Ans: Refer article 4.1 page 4.1 of ED - Basant Agrawal, TMH.
f) Differentiate between First Angle and third angle projection.

Ans: Refer article 2.8 page 2.6 of ED - Basant Agrawal, TMH.
g) What are the principal planes of projections show them with free hand sketch?

Ans: Refer article 2.11 page 2.7 of ED - Basant Agrawal, TMH.
h) How the solids are divided. Give some examples of Regular polyhedra.

Ans: Refer article 2.12 page 2.8 of ED - Basant Agrawal, TMH.
i) What do you mean by True section of a solid.

Ans: Refer Fig. 11.5 page 11.3 of ED - Basant Agrawal, TMH.
j) How do use the development in the practical life.

Ans: Refer problem 9.1 page 9.2 of ED - Basant Agrawal, TMH.

SECTION B (Marks: 8 each)

2. Draw the Front view (F), Top view (T) and Left side view (L) by the First angle projection of the solid shown below:

Ans: Refer article 4.11 page 4.9-4.16 of ED - Basant Agrawal, TMH.

3. Draw the projections of the following points in First Angle projection.
a) Point A lies in HP and 30 mm in front of VP.
b) Point B lies in VP and 30 mm above HP.

Ans: Refer chapter 9 of ED - Basant Agrawal, TMH.

4. A straight line AB, 60 mm long makes an angle of 30° to HP and 60° to VP. The one end of the line AB lies in HP and is 20 mm in front of VP. Draw its Projections.

Ans: Refer problem 11.16 page 11.19 of ED - Basant Agrawal, TMH.
5. A hexagonal prism base edge 25 mm and height 50 mm is resting on an edge of its base on HP in such a manner that the base makes an angle of 45° with HP. Draw its projections.

Ans: Refer problem 12.7 page 12.10 of ED - Basant Agrawal, TMH.

SECTION C (Marks: 8 each)

6. A square pyramid, base edge 25 mm and height 50 mm is resting on its base in HP in such a way that one of its base edges makes an angle of 30° with the VP. It is cut by a sectional plane parallel to HP and passing at a distance of 25mm from the base along the axis. Draw the front view and sectional top view.

Ans: Refer Fig. E7.10 page 7.15 of ED - Basant Agrawal, TMH.
7. A vertical cylinder 50 mm diameter and height 70 mm standing on its base in HP, is completely penetrated by a horizontal cylinder of the same diameter and length. Their axes bisects each other at right angles and are parallel to VP. Draw the projections showing lines of interpenetration.

Ans: Refer article 15.19 page 15.16 of ED - Basant Agrawal, TMH.
8. A right cylinder of 30 mm diameter and 50 mm height of axis is cut by a sectional plane inclined at 30° to HP and passing 20 mm from base. Draw the development of the truncated cylinder.

Ans: Refer problem 13.39 page 13.33 of ED - Basant Agrawal, TMH.
9. A cube of 40 mm side rests centrally on a square block of 70 mm edges and 30 mm thick. Draw the isometric view of the two objects with edges of the two blocks kept parallel to each other.

Ans: Refer problem 14.2 page 14.3 of ED - Basant Agrawal, TMH.