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WorksheetsBMED Quiz
Total questions: 49
Worksheet time: 25mins
What is a Curve?
A line or outline which gradually deviates from being straight
A piece of a circle
An arc
A closed shape
What is Eccentricity?
A curve with a Tangent
The use of a Directrix
The roundness of a shape
The ratio used in the Construction of Particular Engineering Curves
What is a Normal?
A line intersecting a given line at right angles
A line that measures 50mm
Another name for Directrix
A line intersecting a given line at 45 degrees
What is a Locus?
The name of an Ellipse after it is constructed
A triangular object
The movement of Geometric points
Another name for Frustrum
What is a Tangent?
A straight line
A particular position or place where something occurs
The movement of Geometric points
A straight line or plane that touches a curve or curved surface at a point, but does not cross it if extended
What is a Diameter?
A straight line passing from side to side through the center of a circle
A particular position or place where something is situated
The center of a circle
The remaining portion after a cone has been cut
What is an Elevation?
A straight line passing through half the center of a circle
A 2D representation of a 3D object or a particular side of a building
The top of a building
A method of constructing an Engineering Curve
What is an Ellipse?
The movement of geometric points such that the ratio of the distance between two fixed points is E>1
Any Curve
An Electrical Plan of a building
The movement of geometric points such that the ratio of the distance between two fixed points is E<1
What is a Cycloidal Curve?
The movement of geometric points such that the ratio of the distance between two fixed points is E=1
Any Curve
A fixed point on the circumference of a circle which rolls without slipping along a fixed straight line on a circle
A Foundation plan of a building
What are the types of Cycloidal Curves?
Involtues and Helix
Cycloids, Epicycloids, Hypocycloids
Ellipse, Parabola, Hyperbola
Inferior Trachoid & Superior Trachoid
What are Conic Sections?
Any fixed line
Any composite shape
The generator of a cone
Figures formed by the intersection of a plane and a circular cone
What are Engineering Curves?
Curves used in Engineering
The Foci of a Curve
The result of the movement of geometric points
Any non-circular Curve
What is a Parabola?
The locus of a point, moving in a plane, such that the Eccentricity of its distance from a fixed point F to the directrix is = 1
The vertex of a Curve
The remaining part of a cone that has been cut
The removed part of a cone that has been cut
What is a Frustrum?
A cone that has not been cut
The top of a cone
The remaining part of a cone that has been cut
The removed part of a cone that has been cut
What is a Frustra?
A cone that has not been cut
The top of a cone
The remaining part of a cone that has been cut
The removed part of a cone that has been cut
What is the correct method of constructing a Focus?
Draw a vertical line of 50mm, then find the midpoint
Measure all of the major axis, then from any end of the minor axis; draw an arc that cuts the major axis
Measure half of the major axis, then from any end of the minor axis; draw an arc that cuts the major axis
Draw a horizontal line of 100mm, then find the midpoint
Which is correct in relation to Eccentricity?
E= distance of the point from the focus/distance of the point from the directrix
E=distance of the point from the Directrix to the vertex
E= distance of the point from the directrix/distance of the point from the focus
E=distance of the point from the Directrix to the Normal
What is a Focus?
The ability to concentrate
The vertex of an Engineering Curve
One of the fixed points on a fixed-line of a given curve
The midpoint of the Directrix
Which of the following terms is used to refer to the ellipse, parabola, and hyperbola collectively?
Asymptote
Conic Sections
involutes
pitch
Which of the following describes why the ellipse, parabola, and hyperbola are called conic sections?
These curves appear on the surface of a cone when it is cut by some typical cutting planes
These curves appear on the surface of a cone when it is cut by any cutting plane
These curves appear on the side of a cone when it is cut by some typical cutting planes
These curves appear on the apex of a cone when it is cut by some typical cutting planes
Which of the following terms is used to refer to conic section curves, cycloids, involutes, and spirals collectively?
plane curves
descending curve
broken curve
ascending curve
Which of the following Engineering Curves would result from an eccentricity of 2/3?
Involute
Helix
Parabola
Ellipse
Which of the following is a method by which an ellipse can be constructed?
Focus Directrix Method
Tangent method
rectangular hyperbola method
Which of the following is a method by which a parabola can be constructed?
Focus Directrix Method
Tangent method
rectangular hyperbola method
Which of the following is a method by which a hyperbola can be constructed?
Focus Directrix Method
Tangent method
rectangular hyperbola method
Which of the following methods can be used to construct an ellipse, parabola, and hyperbola?
Focus directrix method
concentric circle method
arcs of circle method
tangent method
Which of the following Engineering Curves would result from an eccentricity of 3/2?
hyperbola
Helix
Parabola
Ellipse
What is a Directrix?
A 45 degree line used in describing a curve or surface
A slant line used in describing a curve or surface
A relative line used in describing a curve or surface
A fixed-line used in describing a curve or surface
Which of the following Engineering Curves would result from an eccentricity of 1?
hyperbola
Helix
Parabola
Ellipse
What is an asymptote?
A 45 degree line used in describing a curve or surface
A line or any line that runs tangentially to the curve of a hyperbola, but they must be at 90 degrees
A relative line used in describing a curve or surface
A line or any line that runs tangentially to the curve of a hyperbola, but they must be at 60 degrees
What is an archimedean spiral?
This is the locus of a point that moves away from another fixed point at uniform linear velocity and uniform angular velocity
A line or any line that runs tangentially to the curve of a hyperbola, but they must be at 90 degrees
A relative line used in describing a curve or surface
A line or any line that runs tangentially to the curve of a hyperbola, but they must be at 60 degrees
What is an involute?
This is the locus of a point that moves away from another fixed point at uniform linear velocity and uniform angular velocity
A line or any line that runs tangentially to the curve of a hyperbola, but they must be at 90 degrees
This is the locus of a point on a straight line, when the straight line rolls around the circumference of a circle without slipping
A line or any line that runs tangentially to the curve of a hyperbola, but they must be at 60 degrees
What is an helix?
This is the locus of a point that moves away from another fixed point at uniform linear velocity and uniform angular velocity
The locus of a point which moves around a cylinder at a constant velocity whilst advancing along the cylinder at a constant velocity
This is the locus of a point on a straight line, when the straight line rolls around the circumference of a circle without slipping
A line or any line that runs tangentially to the curve of a hyperbola, but they must be at 60 degrees
The types of helix are
bolt and lock
circular and elliptical
superior and inferior
Spring and screw thread
What is the difference between the spring helix and screw thread?
The spring helix
goes around a mass and the screw thread, itself, is not a part of a mass
The spring helix is a mass and the screw thread, it self, is apart of a mass
The spring helix does not go around a mass and the screw thread, itself, is a part of a mass
The spring helix is not a mass and the screw thread, it self, is apart of a mass
What is meant by the term circumference?
Half the length around a circle
The total length around a circle
Quater the length around a circle
A little more than half the length around a circle
What is a trochoid?
This is the locus of a point that moves away from another fixed point at uniform linear velocity and uniform angular velocity
The locus of a point which moves around a cylinder at a constant velocity whilst advancing along the cylinder at a constant velocity
This is the locus of a point on a straight line, when the straight line rolls around the circumference of a circle without slipping
This is the locus of a point not on the circumference of a circle but attached to it as the circle rolls, without slipping along a straight line
If a point "P" is being traced inside the circumference of a circle the curve produced is called an?
Archimedian spiral
Superior trochoid
Inferior trochoid
Asymptote
If a point "P" is being traced outside the circumference of a circle the curve produced is called a?
Archimedian spiral
Superior trochoid
Inferior trochoid
Asymptote
What is the term used in relation to the rotation of circular objects to describe one complete turn?
Spiral
Convolution
lead
Revolution
What is the term used in relation to the helical or spiral movement of objects to describe one complete turn?
Spiral
Convolution
lead
Revolution
What is meant by the term centroid?
A geometric center
The use of a Directrix
The roundness of a shape
The ratio used in the Construction of Particular Engineering Curves
What is meant by the term moment?
A geometric center
The use of a Directrix
The turning effects of a force acting on a member
The ratio used in the Construction of Particular Engineering Curves
What is a cam?
A geometric center
The use of a Directrix
The turning effects of a force acting on a member
A component on which a particular (shape) profile has been modified
What is a plate cam?
The refers to a flat disc that has a certain shape (or a profile) machined on to it
The use of a Directrix
The turning effects of a force acting on a member
A component on which a particular (shape) profile has been modified
What is a face cam?
The refers to a flat disc that has a certain shape (or a profile) machined on to it
This refers to a disc that has a groove machined onto its face and a roller follower is used to follow the groove as the cam rotates
The turning effects of a force acting on a member
A component on which a particular (shape) profile has been modified
What is a cylinder or drum cam?
The refers to a flat disc that has a certain shape (or a profile) machined on to it
This refers to a disc that has a groove machined onto its face and a roller follower is used to follow the groove as the cam rotates
This refers to a cylinder that has had a profile machined on to it and as the cam rotates the profile imparts a particular motion on its follower
A component on which a particular (shape) profile has been modified
What are the types of motion that can be derived from the loci of the follower as it interacts with the cam?
Uniform velocity, Simple Harmonic Motion and Uniform Acceleration or Retardation
Cycloids, Epicycloids, Hypocycloids
Ellipse, Parabola, Hyperbola
Inferior Trachoid & Superior Trachoid
What are the main categories of cams?
Uniform velocity, Simple Harmonic Motion and Uniform Acceleration or Retardation
Cycloids, Epicycloids, Hypocycloids
Plate or face cams, and cylindrical cams
Inferior Trachoid & Superior Trachoid
