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

Question 6

(a) In a hyperbola the distance from the focus to the vertex is 30 mm and the eccentricity is 1.5. Draw a portion of the hyperbola.

(b) In Fig. 6 the line DD is the directrix of a parabola and A and B are points on the curve. The position of the focus F is shown. Show how the position of the focus is determined and draw a portion of the curve.