Engineering Graphics Exam 2

Jeopardy Review | Exam 2

Which Geometric Element specifies an exact location in space

Point

This Geometric Element may be finite or infinte. Has length but no wdith.

Line

This Geometric Element is a two-dimensional slice of space.

Plane

This Geometric Element may be used to define the boundary of a 3-D object. 

Surface

How can you convert (x,y) from Cartesian (2D) to Polar Coordinates (2D).

r=sqrt(x²+y²), theta= arctan(y/x)

True or False: Projection lines are always perpendicular to fold lines

True

What is the purpose of a Secondary Auxiliary View?

A secondary auxiliary view is used to show the true shape of an oblique surface

True or False: A line appears true length if it lies in a plane parallel to the projection plane

True

A Surface appears in _____________ if it is parallel to the projection plane

True shape/undistorted

A fold line that is ___________to a “true length” line on a surface gives a view that shows the surface as an edge.

Perpendicular

A 3-D model of an object that contains volumetric information

Solid Model

Any view that is projected from (adjacent to) one of the principle views and which is not parallel to any of the principle planes

Primary Auxiliary View

An orthographic view that is projected into a plane that is not parallel to any of the principle planes

Auxiliary views

What type of Solid Modeling is this?

Revolved

What is the purpose of a Primary Auxiliary View?

To show the true shape of a detail that does not lie in on of the principle planes

What type of view is this drawing?

Secondary Auxiliary View

Mention 4 types of coordinates systems (in 2D and 3D)

Cartesian, Polar, Cylindrical, Spherical

Convert the Following Cylindrical Coordinates to Cartesian: 

(r=5,theta=36.87,z=4)

x=4, y=3, z=4

An imaginary plane that defines where the object is cut

Cutting Plane

_________ are drawn where the object passes through the cutting plane. If a saw was used to cut the part, then they represent the cutting marks left by the saw blade

Section Lines

True or False: Section lines are not used for thin parts rather they are filled in solid

True

A multi-view technical drawing that reveals details about internal features by displaying the part as if cut by an imaginary cutting plane

Sectioned Drawing

Mentioned 3 different types of section drawings:

Full Section, Half Section, Assembly Section, Offset Section, Broken-Out Section, Revolved Section, Removed Section, Special Section Conventions