Technical Drawing - Exam Papers - Ordinary - 1999 - Paper 1

Question 6

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(a) In a parabola the distance from the focus to the vertex is 20 mm. Draw a portion of the parabola.

(b) In Fig. 6 the line DD is the directrix of an ellipse and the line AB is the direction of the axis. The eccentricity of the ellipse is 0.7 and P is a point on the curve. Show how the position of the focus is determined and draw a portion of the curve.

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