Engineering Drawing Important Question

Time: 3 hrs

Maximum Marks: 70

Minimum Marks: 22 (D Grade)

Note: Attempt five questions selecting one from each unit. Drawings should have line and dimensioning as per standard convention.

Unit-I

1. a) Construct a scale of R.F = 1:250 to show decimetre and long enough to measure upto 30 m. Mark a distance of 26.8 m on it. 7 Marks

Similar to Example 2.15, Page 2.14 of EG - Basant Agrawal, TMH.

Also, refer Exercise 2 problem 24 page 2.28 of EG - Basant Agrawal, TMH.

1. b) The major axis of an ellipse is 100 mm long and minor axis is 55 mm. Find the Foci and construct the ellipse by intersecting arc method. 7 Marks

Similar to Example 3.26, Page 3.35 of EG - Basant Agrawal, TMH.

OR

2. a) On a building plan, a line 10 cm long represents a distance of 5 m. Construct a diagonal scale for the plan to read upto 6 m, showing metres, decimetres and centimetres. Indicate on your scale the lengths 3.24 m on it. 7 Marks

Similar to Example 2.13 Page 2.13 of EG - Basant Agrawal, TMH.

Also, refer Exercise 2 problem 23 page 2.29 of EG - Basant Agrawal, TMH.

2. b) A coin of 40 mm diameter rolls on a horizontal table without slipping. Draw the path travelled by the point on the circumference of the coin in contact with table when coin completes one complete revolution. 7 Marks

Similar to Example 4.1, Page 4.2 of EG - Basant Agrawal, TMH.

Also, refer Exercise 4 problem 1 page 4.19 of EG - Basant Agrawal, TMH.

Unit-II

3. a) Draw the front view and top view of a point placed at a distance of 25 mm and 20 mm respectively from H.P. and V.P. when it is moved from first quadrant to forth quadrant in anticlockwise direction. 7 Marks

Refer Exercise 6 problem 1 page 6.14 of EG - Basant Agrawal, TMH.

It is a combination of Examples 6.1 to 6.4, Page 6.3 to 6.7 of EG - Basant Agrawal, TMH.

3. b) A line PQ 25 mm long is parallel to H.P. and perpendicular to V.P. The end Q is 10 mm in front of V.P. and the line is 20 mm above H.P. Draw the projections of the line and find its traces.7 Marks

Similar to Example 7.3, Page 7.5 of EG - Basant Agrawal, TMH.

OR

4. The front view and top view of a straight line AB measures 50 mm and 65 mm respectively. Point A is in the H.P. and 20 mm in front of the V.P. and front view of the line is inclined at 45° to the reference line. Determine the true length of AB, true angles of inclination with reference planes and its traces. 14 Marks

Refer Example 7.27, Page 7.34 of EG - Basant Agrawal, TMH.

Unit-III

5. A pentagonal pyramid with 25 mm side base and 65 mm height has one of its slant faces on the horizontal plane and the edge of the base contained by that slant face makes an angle of 25° to the V.P. Draw the projections of the pyramid. 14 Marks

Refer Example 9.31, Page 9.38 of EG - Basant Agrawal, TMH.

OR

6. A square plate of 45 mm side and 40 mm thick is nailed centrally to right square prism of 30 mm side and height 60 mm such that their axes coincide. Draw the projections when axis of the combined solid is parallel V.P. to inclined at 30° to H.P. The two base edges of square plate are parallel to V.P. and edges of prism are parallel to square plate and combination is resting on one of the base edges of square plate. 14 Marks

One should know Example 9.5, Page 9.11 of EG - Basant Agrawal, TMH.

Unit-IV

7. A pentagonal prism side of base 30 mm and axis 60 mm long lies with one of its rectangular faces on H.P. and its axis is inclined at 30° to V.P. A section plane perpendicular to H.P. and parallel to V.P. cuts the prism into two halves. Obtain its top and sectional front view. 14 Marks

Refer Example 10.7, Page 10.11 of EG - Basant Agrawal, TMH

This question appears in the question paper of Dec 2012.

OR

8. A square pyramid side of base 30 mm and axis length 45 mm is resting on its base on H.P. with sides of base equally inclined to V.P. A circular hole of diameter 20 mm is drilled through the pyramid so that axis of the hole is perpendicular to V.P. and parallel to H.P. and intersecting the axis of the pyramid at 12.5 mm above the base. Develop the pyramid. 14 Marks

Similar to Example 11.23, Page 11.26 of EG - Basant Agrawal, TMH.

Also, refer Exercise 11 problem 20 page 11.37 of EG - Basant Agrawal, TMH.

This question appears in the question paper of Dec 2012.

Unit-V

9. a) State five advantages of CAD. 7 Marks

Refer Article 13.2, Page 13.1 of EG - Basant Agrawal, TMH.

9. b) Mention four utility commands and state their basic functions. 7 Marks

Refer Article 13.15, Page 13.15 of EG - Basant Agrawal, TMH.

OR

10. A square pyramid rests centrally over a cylindrical block. Draw the isometric projection of the arrangement if pyramid has a base of 25 mm side and 40 mm long axis whereas the cylindrical block has a base of 50 mm diameter and 25 mm thickness. 14 Marks

Refer Example 12.11, Page 12.15 of EG - Basant Agrawal, TMH.

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