PTU ME102 Engineering Drawing May 2009 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) Define refraction fraction (R F ).

Ans: Refer article 4.3 page 4.2 of ED - Basant Agrawal, TMH.

b) Drawthe centre line.
Ans: Refer article 2.5 page 2.4 of ED - Basant Agrawal, TMH.

c) What is single stroke and double stroke letters?
Ans: Refer article 2.8 page 2.6 of ED - Basant Agrawal, TMH.

d) Draw a symbol of first angle projections.

Ans: Refer Fig. 7.9(b) page 7.8 of ED - Basant Agrawal, TMH.
e) What is the necessity of dimensioning the drawing of an object?

Ans: Refer article 2.10 page 2.7 of ED - Basant Agrawal, TMH.
f) What is the full name of 'HP' and 'VP'?

Ans: Horizontal plane, Vertical plane
Detail at article 7.5 page 7.3 of ED - Basant Agrawal, TMH.
g) What is the trace of a straight line?

Ans: Point

Detail at article 9.3 page 9.2 of ED - Basant Agrawal, TMH.
h) What is a plane?

Ans: Refer article 10.1 page 10.1 of ED - Basant Agrawal, TMH.
i) How many numbers of equal faces are in tetrahedron

Ans: 4
Refer Fig. 11.1(a) page 11.2 of ED - Basant Agrawal, TMH.
j) Draw the dimension line.

Ans: Refer article 2.11 page 2.7 of ED - Basant Agrawal, TMH.

SECTION B (Marks: 8 each)

2. Draw the projections of a cube of 50 mm side resting on the ground with one of its vertical faces inclined at 30 degree to VP. Its nearer vertical edge is 15 mm behind the VP and nearer horizontal face is 20 mm below HP?

Ans: Need to draw the front and the top view of the cube in givin position. It can be drawn in a single stage.

3. A pont Q is 25 mm above the HP and 30 mm behind VP. Draw its projection.

Ans: Refer Problem 2(d) page 8.10 ED - Basant Agrawal, TMH.

4. A pentagonal pyramid of 30 mm base edges and axis 70 mm long, resting on its base on the HP having a side of base parallel to VP and away from it. It is cut by a section plane parallel to HP and passes through the centre of its axis. Draw its sectional plan and elevation.

Ans: Refer problem 12.18 page 12.20 of ED - Basant Agrawal, TMH.
5. Wnte in double stroke vertical and inclined style, the following statements using ratio 7:4.

Ans: Refer article 2.8 page 2.6 of ED - Basant Agrawal, TMH.

SECTION C (Marks: 8 each)

6. A vertical square prism of 60 mm base and axis length of 110 mm is resting on one of its square base on ground and having its two rectangular faces equally inclined to VP. A horizontal square hole of side 40 mm is drilled through it such that the axes of both the prism and the hole bisect each other at right angle. The faces of the hole are equally inclined to HP. Draw the projection of the combination and show the lines of intersection.

Ans: Refer problem 14.1 page 14.2 of ED - Basant Agrawal, TMH.
7. Construct a scale having R.F. = 1/50000 to read kilometres and hectometres and long enough to measure up to 8 kilometres. Measure a length of 6 km and 3 hm on the scale.

Ans: Draw plain scale, Refer article 4.8 page 4.3-4.7 of ED - Basant Agrawal, TMH.
8. A right regular pentagon prism of side 30 mm and 60 mm height is resting on its base on HP having one of its base edges perpendicular to the VP. An A.I.P. inclined to HP at 30 degree and perpendicular to the VP cuts its axis at a distance of 36 mm from the base. Develop the lateral surface of the truncated prism.

Ans: Similar to Problem 12.2 page 12.5 of ED - Basant Agrawal, TMH.

9. Incomplete orthographic projection of an object is shown in the Figure. Draw the missing lines in these views.

Ans: Refer chapter 7 of ED - Basant Agrawal, TMH..