Engineering Graphics

Practical exam : Simple machine blocks Please draw the three orthographic views of each of the two machine blocks... serial no. 6 and 7. 10 marks for each block 5 marks for viva 5 marks for class work

  St. COLUMBA’S SCHOOL Ashok Place, N. Delhi – 110001 Pre-Board 2, February 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 pentagonal pyramid in              the vertical position having base side 40 mm and having o ne of the base edges, away           from the observer parallel to the VP.