SAMPLE TEST PAPER - I

Transcription

1 SCHEME E SAMPLE TEST PAPER - I Course Name : Mechanical Engineering Group Course Code : AE/PG/PT/ME/MH/FE Semester : Third Subject : Mechanical Engineering Drawing Time : 90 Minutes Marks: 25 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] Attempt the following. 08 Marks a) Figure. -I shows Front View and partial Auxiliary View of an object. Complete Top View. OR 1

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3 a) Figure II shows Front View and Top View. Complete the partial Auxiliary View of given object. b) Line AB 80 mm long has it s end A in the H.P. and 20 mm in front of the V.P. Draw it s projection when line AB makes an angle of 45 with the H.P. and 35 with the V.P. (08 Marks) OR b) A hexagonal plane 25 mm sides is having one of it s corners on the H.P. with it s surface inclined at 45 0 to the H.P. and diagonal through the corner on H.P is parallel to the V.P. Draw it s projections. (08 Marks) Q.2] Attempt any ONE of the following (09 Marks) a) A vertical cone of 80 mm diameter and 100 mm long is penetrated by a horizontal cylinder. The axis of cylinder is parallel to both the reference planes and is 5 mm away from the axis of cone. The cylinder axis is 30 mm above the base of cone and diameter of cylinder is 40 mm. Draw the projections showing curves of intersection. b) A square prism of 45 mm side stands vertically with its rectangular faces equally inclined to VP. It is penetrated by a horizontal triangular prism of 35-mm side of base such that their 3

4 axes bisect each other at right angles. Draw the projection showing lines of intersection, when the rectangular face of triangular prism is parallel to VP and is away from the observer. 4

5 SCHEME E SAMPLE TEST PAPER - I Course Name : Mechanical Engineering Group Course Code : AE/PG/PT/ME/MH/FE Semester : Third Subject : Mechanical Engineering Drawing Time : 90 Minutes Marks: 25 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] Attempt the following (08 Marks) a) Draw the conventional representation of i) Antifriction Bearings ii) Splined Shaft iii) Spring with flat end iv) Half Section OR b) 1) Calculate upper limit size and lower limit size for φ25 H7. 2) Prepare a welding drawing of two shafts of equal diameter welded end to end by a square butt joint with convex contour at site. Q.2] Attempt any ONE of the following. a) Draw the assembly of the details shown in Figure-I (17 Marks) 5

6 Fig. 1 OR 6

7 a) Draw the details of the assembly drawing shown in Figure-II Fig. 2 7

8 Scheme E SAMPLE QUESTION PAPER I Course Name : Mechanical Engineering Group Course Code : AE/ME/PT/PG/MH/FE Semester : Third Subject Title : Mechanical Engineering Drawing Duration : 4 Hours Marks: 100 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.1A) Draw conventional representation for any FOUR of the following. (08 Marks) a) Conventional break for I section. b) Stacked lamination c) Revolved section d) Serrated shaft e) Worm gear f) 45 0 lateral Q.1B) Attempt any THREE of the following (12 Marks) a) 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 b) The shaft has size ф and hole size is ф Determine the type of fit between them. 8

9 c) Refer fig. 2. What is the meaning of symbols at x and y? Fig.2 d) 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. (Use first angle method of projection) (08 Marks) Fig. 3 Q.2 b) A straight line AB 70 mm long has it s end A 10 mm. above the H.P. and end B 50 mm in front of the V.P. Draw the projections of line AB if it is inclined at 30 0 to the H.P and 45 0 to the V.P. (08 Marks ) OR Q.2 b) A thin circular plate of 50mm diameter is resting on point A of it s rim with the surface of the plate inclined at 45 0 to the H.P and the diameter through A inclined at 30 0 to the V.P. 9

10 Draw the projection of the plate when it s centre is 40mm above the H.P. and 40 mm in front of the V.P. (08 Marks) Q.3 Attempt any TWO of the following (16 Marks) a) A hole of 50mm diameters 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 30 0 to V.P It is completely penetrated by another horizontal square prism base as 35 mm side and 100mm long, faces of which are equal inclined to V. P. The axis of both the prism is parallel to V.P and bisects 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 (20 Marks) a) Fig 4 shows the details of universal coupling. Draw sectional F.V and T.V. of assembly. Prepare bill of material. 10

11 b) Fig 5 shows the details of foot step bearing. Draw sectional F.Vand T.V of the assembly. Prepare bill of material. Fig. 5 11

12 Q.5 Attempt any ONE (20 Marks) a) Fig 6 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. Fig. 6 12

13 b) Fig 7 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. Fig. 7 13