Engineering Graphics

  ST. COLUMBA’S SCHOOL Ashok Place, N. Delhi – 110001 PA 1, August 2021 Engineering Graphics   Class XI Time: 1 hr                                                                                                      MM : 40   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.   Draw angles of 36 0 , 72 0 and 108 0 .                                                                                  (8)     Q2. Divide a line segment AB in the ratio of 1:4.                                                                     (5)   Q3. Divide a line segment in the ration 4:5.                                    

Class Test MM = 40 Duration = 40 mins Topic: Projection of lines and planes Q1. Draw the projections of a line AB 30 mm long, that is parallel to the VP but inclined to the HP at 30 degrees and its nearer end A is 20 mm above the HP.    (7) Q2. Draw the projections of a line CD 40 mm long, that is parallel to the HP but inclined to the VP at 45 degrees and its nearer end C is 10 mm in front of the VP.   (7) Q3. Draw the projections of a line AB 30 mm long, that is inclined to the HP at 30 degrees and 45 degrees to the VP.     (8) Q4. Draw the projections of regular pentagon of side 30 mm whose surface s inclined to the VP at 30 degrees.   (10) Q5. Draw the projections of a square of side 40 mm whose surface inclined to the HP at 45 degrees.  (8)