Sample Question Paper I

9023

Course Name :- Automobile Engineering

Course code :- AE/ME/PT/PG/MH/FE

Semester :- Third

Subject :- Mechanical Engineering Drawing

Duration :- 4 hours Marks: 80

 

Instruction:

1)   All questions are compulsory.

2)   Use only H / 2H grade pencils.

3)   Retain all construction lines and nomenclature.

4)   Assume suitable data if necessary.

5)   All dimensions in mm

Q.1 A) Draw conventional representation for any four of the following (08)

1) Conventional break for I section.

2) Stacked lamination

3) Revolved section

4) Serrated shaft

5) Worm gear

6) 45⁰ lateral

 

1 B) Attempt any two of the following (08)

1)   Fig. 1 shows three views of a block in a shape of step. Indicate appropriate machining symbol at surface A indicating machining method, direction of lay. Use appropriate symbol to leave surface B unmachined.

 

 

 

-0.02 +0.02

2)   The shaft has size ф 35 ^0.04 and hole size is ф 35 ^0.00. Determine the type of fit between them.

3)   Refer fig. 2. What is the meaning of symbols at x and y?

 

 

 

 

4)   Two rectangular plates are to be welded with each other along the length .The thickness and length of both the plates is 10 mm and 50 mm respectively .The plates are to be u butt welded with convex counter. Prepare welding drawing.

 

Q.2 a) Fig 3 shows F.V. and partial auxiliary view of an object. Draw the right hand side View ( 08)

 

 

 

 

 

 

 

 

 

 

 

 

 

Q.2 b) Draw the development of lateral surface of roof in the form of frustum of

square pyramid as shown in fig. 4 (8)

 

 

 

 

 

 

 

OR

Q.2 b) Fig 5 shows two pipes joined with each other. Develop the lateral surface of

pipe A & B. (8)

 

 

 

 

 

 

 

Q.3 Attempt any two of the following (16)

a) A hole of 50mm diameter is drilled through a vertical cylinder of 60 mm diameter

and 80 mm long. The axis of hole being parallel to both the ref. planes and 10 mm

away from the axis of vertical cylinder . Draw projections showing curves of

intersection.

b) A vertical square prism base 50mm side and height 100mm has a face inclined at

30⁰ to V.P It is completely penetrated by another horizontal sq. prism base as 35

mm side and 100mm long, faces of which are equal inclined to V.P.The axis of

both the prism are parallel to V.P and bisect each other of right angles .Draw

projections showing lines of intersection.

c) A vertical cone 80 mm dia of base and axis 100mm long is completely penetrated by a horizontal cylinder of 50mm dia. The axis of cylinder is parallel to both the ref. planes and intersects the axis of cone at 30 mm above the base of cone. Draw the projections showing curve of intersection. Length of cylinder is 100mm

 

Q 4 Attempt any one (16)

a)    Fig 6 shows the details of universal coupling. Draw sectional F.V and T.V. of assembly. Prepare bill of material.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

b) Fig 7 shows the details of foot step bearing. Draw sectional F.Vand T.V of the assembly. Prepare bill of material.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q.5 Attempt any one (16)

a) Fig 8 shows assembly of piston and connecting rod. Draw details. Mention appropriate dimensional tolerances, type of shaft/hole, tolerance grade, geometrical tolerances etc on each detail if required. Refer tolerance table provided with fig.

b) Fig 9 shows assembly of drill jig. Draw detail of Jig plate and Jig bush only.

Mention appropriate dimensional tolerances, type of shaft/hole, tolerance

grade, geometrical tolerances etc on each detail if required. Refer tolerance

table provided with fig.