Engineering Graphics

St. COLUMBA’S SCHOOL Ashok Place, N. Delhi – 110001 Pre-Board 3, March 2021 Class XII, Engineering Graphics Time: 3 hrs                                                                                                      MM : 70 Instructions 1.        Attempt all questions. 2.        All dimensions are in mm. 3.        Follow the SP: 46-1988 codes (with first angle projections) 4.        Use both sides of the drawing sheet, if required. 5.        Missing or mismatching dimensions, if any, may be suitably assumed 6.        Diagrams are not to scale. Follow the dimensions only. 7.        Draw neat projections/ views.    Q 1 (a) Construct an Isometric scale of length 80 mm with subdivisions.                  (4)                                        (b) Draw isometric projection of a hexagonal prism in              the vertical position having base side 40 mm and height 70 mm.              Two of the base edges are parallel to the VP.                                                    

ST. COLUMBA’S SCHOOL Ashok Place, N. Delhi – 110001 Annual Exam, Feb-March 2021 Engineering Graphics   Class XI Time: 3 hours                                                                                                  MM: 70   Instructions 1.       Attempt all questions. 2.       All dimensions are in mm. 3.       Follow the SP: 46-1988 codes (with first angle projections) 4.       Use both sides of the drawing sheet, if required. 5.       Missing or mismatching dimensions, if any, may be suitably assumed 6.       Diagrams are not to scale. Follow the dimensions only. 7.       Draw neat projections/ views.      Q1. Divide a line segment in the ratio 1:2:3 using a compass.                                                 (6)   Q2. Draw an Exterior Common Tangent to two circles of radii 30 mm and 40 mm,         having their centres 100 mm apart.                                                                                      (6)   Q3. Make an ellipse with major axis 90 mm and mi