Page 2 



2. [A nswer four of the five] 



(a) How should drawing pencils be sharpened ? 



(b) Name four common causes of blots in inking due to improper handling 



of the drawing instruments. 



(c) Describe fully, with a sketch, the method of drawing a line inclined at 



75 degrees to the horizontal. 



(d) In what order should the hnes of a drawing be inked ? 



(e) Why and when and how much should the legs of the compasses be bent ? 



3. (a) Draw the top, front, and side views of the frustum of a right square 



pyramid. Axis vertical. Sides of upper base f inch, of lower base 

 2 inches; vertical distance between bases 2| inches; two edges of each 

 base parallel to V. 



(b) Show the true shape of the section cut from the above-mentioned soUd 

 by a plane which is perpendicular to V, makes 45 degrees with H, and 

 passes through the middle point of the axis. 



4. Make an isometric drawing of the following block: 



Front vertical face a regular hexagon, sides 1 inch, two sides horizontal. 

 Rear vertical face a regular hexagon, sides 2 inches. Axis horizontal and 

 2| inches long. Side faces all equally inclined to the axis. A round hole 

 1| inches in diameter extends through the block; the axis of the hole 

 coincides with the axis of the block. 



5. 



The front and end views are given. Copy these and draw the top view. 



90 



(THIS EXAMINATION IS CONTINUED ON PAGE 3) 



