Technical Drawing - Exam Papers - Ordinary - 1998 - Paper 1

Question 3

Fig. 3 shows the plan of a right cone resting on the horizontal plane. The cone has an altitude of 60 mm.

(a) Draw the plan of the cone and project the elevation showing the points A, B and P on the surface of the cone in plan and elevation.
(b) Draw the plan and elevation of a sphere which rests on the horizontal plane and touches the cone at the point P.
(c) Draw the projections of the shortest line on the surface of the cone from A to B.