(1) Define : (i) Ellipse (ii) parabola (iii)Hyperbola
Ans :
- Ellipse : A closed plane curve generated by a point moving in such a way that the sums of its distances from two fixed points is a constant.
- Parabola : A curve formed by the intersection of a cone with a plane parallel to a straight line in its surface.
- Hyperbola : A plane curve having two separate parts or branches, formed when two cones that point toward one another are intersected by a plane that is parallel to the axes of the cones.
(2) Construct Ellipse to be inscribed in a parallelogram of dimension 100 mm and 70 mm. 75° inclined with horizontal.
(3) Draw an Ellipse having major axis 120 mm and minor axis 80 mm. Use Oblong method.
(4) If Base is 130 mm and axis length 85 mm, draw parabola by rectangle method.
(5) Draw the parabola by Tangent method with base = 120 mm and Axis length =85 mm.
(6) Motor car head lamp parabolic reflector is having an aperture (opening) of 175 mm and a depth of 135 mm. Draw the shape of the reflector.
