Steps are given to determine the centre of curvature at a given point on a conic. Arrange the steps. Let P be the given point on the conic and F is the focus.Join P with F.Draw a line NR perpendicular to PN and cutting PF or PF-extended at R.Draw a line RO perpendicular to PR and cutting PN-extended at O which is centre of curvature.At P, draw a normal PN, cutting the axis at N.

Topics in this quiz include: Conic sections basics, evolutes and helix construction, cam, helical springs and screw threads construction.   Here are some curves used in engineering drawing: Conic section: A quadratic curve that results from a plane intersecting a cone's surface. The three types of conic sections are the hyperbola, the parabola, and the ellipse. Cycloid: The path of a point on a circle that moves along a straight line without slipping. Ellipse: The locus of all points in a plane where the sum of their distances from two fixed points is constant. The fixed points are known... Show more

Topics in this quiz include: Conic sections basics, evolutes and helix construction, cam, helical springs and screw threads construction.
 

Here are some curves used in engineering drawing:
Conic section: A quadratic curve that results from a plane intersecting a cone's surface. The three types of conic sections are the hyperbola, the parabola, and the ellipse.
Cycloid: The path of a point on a circle that moves along a straight line without slipping.
Ellipse: The locus of all points in a plane where the sum of their distances from two fixed points is constant. The fixed points are known as the foci, and the fixed line is the directrix.
Compound curve: A curve made up of two or more circular curves that are connected end to end with different radii and centers. Compound curves are used when a more gradual transition between straight sections is required.
Reverse curve: A curve made up of two circular curves with opposite directions. Reverse curves are used when a significant change in alignment direction is needed. 

Other curves used in engineering drawing include: Involute, Evolute, Spiral, Helix. 
 

Related test: Engineering Drawing Practice Test: Geometrical Construction

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