Explore topic-wise MCQs in Civil Engineering.

This section includes 61 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

You apply a property called Thickness to a standard AutoCAD CIRCLE. What type of AutoCAD object do you now have officially?

A. Surface Model (Polygon Mesh)
B. Solid Model (3D Solid)
C. PLINE
D. Cylinder
Answer» B. Solid Model (3D Solid)
Discussion
2.

All of the following objects can be extruded except a(n)

A. arc.
B. polyline.
C. ellipse.
D. region.
Answer» B. polyline.
Discussion
3.

All of the following are examples of solid primitives except the

A. sphere.
B. cone.
C. dome.
D. pyramid.
Answer» D. pyramid.
Discussion
4.

By default, AutoCAD® displays all kinds of models in wireframe format. To find out which type of solid a specific model is, use the

A. ID command.
B. REGEN command.
C. LIST comman
D. MODELTYPE system variable.
Answer» D. MODELTYPE system variable.
Discussion
5.

An analytic surface is one that

A. is described by an equation or set of equations.
B. is formed from a set of data points that are used as control points.
C. interpolates the input data, allowing control of individual data points.
D. is created using a minimum of four curves that have adjoining edges.
Answer» B. is formed from a set of data points that are used as control points.
Discussion
6.

A wireframe model of a titanium block would most closely resemble a(n)

A. ice cube.
B. empty cardboard box.
C. box-shaped wire basket.
D. book.
Answer» D. book.
Discussion
7.

The disadvantage of solids created using pure primitive instancing is that

A. they are less accurate than solids created using cell decomposition.
B. they must be converted to another type of solid before they can be edited.
C. they are created using the B-rep format.
D. some of the parameters of the solids are not specified.
Answer» C. they are created using the B-rep format.
Discussion
8.

Compared with surface and solid models, wireframe models take

A. about the same amount of time to create.
B. less time to create.
C. more time to create.
D. about 30 minutes to create.
Answer» B. less time to create.
Discussion
9.

You want to draw an octagon shape window on a vertical wall face in your 3D House Plan. Which UCS command option is best suited to place your User Coordinate System on this front wall face to ensure the window is placed flat on this wall?

A. Origin
B. ZAxis
C. 3point
D. View
Answer» D. View
Discussion
10.

To create a revolved solid, use the

A. EDGESURF command.
B. REVSURF command.
C. REVOLVE command.
D. EXTRUDE command.
Answer» D. EXTRUDE command.
Discussion
11.

The World option of the UCS command

A. returns to the world coordinate system.
B. returns to the previous user coordinate system.
C. defines a new world coordinate system.
D. aligns a new coordinate system parallel to the screen.
Answer» B. returns to the previous user coordinate system.
Discussion
12.

If you were on one side of a wireframe cube looking toward a solid sphere on the other side of the cube, you would see

A. only the wireframe.
B. the solid sphere and the wireframe, because the wireframe has no sides.
C. the outline of the sphere through the translucent walls of the wireframe.
D. the solid sphere only, because the wireframe is tr
Answer» B. the solid sphere and the wireframe, because the wireframe has no sides.
Discussion
13.

To determine if two parts (3D Solids) will fit together without any interference, what 3D AutoCAD command would you use?

A. FIT
B. UNION
C. SUBTRACT
D. INTERFERE
Answer» E.
Discussion
14.

One disadvantage of using wireframes as opposed tosurface or solid models is that

A. they take longer to create.
B. they take up more space on the storage medium.
C. they corrupt more easily.
D. they can be difficult to understand because they are “stick figures.”
Answer» E.
Discussion
15.

Of the following, the object best suited for a wireframe model is

A. the hull of a speedboat.
B. a refrigerator.
C. a wire shelving unit.
D. a laptop computer.
Answer» D. a laptop computer.
Discussion
16.

The axis used to show depth in AutoCAD® is the

A. W axis.
B. X axis.
C. Y axis.
D. Z axis.
Answer» E.
Discussion
17.

The number of segments in a tabulated surface is controlled by the

A. SURFTAB1 system variable.
B. SURFTAB2 system variable.
C. SURFTYPE system variable.
D. EDGESURF command.
Answer» B. SURFTAB2 system variable.
Discussion
18.

The primary purpose of the UCS (User Coordinate System) is?

A. Helps a user to calculate the area of an object.
B. To determine angles for isometric projections.
C. Allows a user to select the desired type of drawing units.
D. Allows a user to draw on a specified 2D Plane in 3D space. E. Allows a user to define a place to put icons.
Answer» E.
Discussion
19.

The right-hand rule is used to determine the direction of the

A. positive X axis.
B. negative Y axis.
C. positive Z axis.
D. negative X axis
Answer» D. negative X axis
Discussion
20.

To view a model from any position in 3D space, use the

A. VIEW command.
B. 3DZOOM command.
C. 3DORBIT command.
D. PAN command.
Answer» D. PAN command.
Discussion
21.

All of the following are surface primitives except the

A. box.
B. cone.
C. spiral.
D. dish.
Answer» D. dish.
Discussion
22.

Surface models are used mostly in

A. modeling mechanical parts.
B. creating architectural models.
C. modeling complex electrical systems.
D. modeling complex curves in boat hulls and car fenders.
Answer» E.
Discussion
23.

The main difference between creating wireframe models and creating 2D objects is that

A. 2D objects cannot be extruded.
B. wireframe objects cannot be edited using 2D editing commands.
C. 2D objects are created on two or more planes.
D. wireframe geometry is created using the X, Y, and Z axes.
Answer» E.
Discussion
24.

A surface primitive is a(n)

A. basic 3D object that can be used to create more advanced models.
B. wireframe model from which surface models can be created.
C. 2D object that can be extruded to form a surface model.
D. analytic surface from which nonanalytic surfaces can be created.
Answer» B. wireframe model from which surface models can be created.
Discussion
25.

A wireframe model is created using

A. 2D objects with the EXTRUDE command.
B. 2D objects such as points, lines, and circles.
C. 3D objects such as spheres and cones.
D. 3D commands such as REVOLVE and TABSURF.
Answer» C. 3D objects such as spheres and cones.
Discussion
26.

The purpose of the UCSICON command is to:?

A. Permit a user to move the UCS system.
B. Permit a user to redefine the location of 0,0.
C. Permit a user to control the placement and appearance of the icon to help you understand your orientation in the XYZ coordinate system.
D. Provide a working plane to draw on.
Answer» D. Provide a working plane to draw on.
Discussion
27.

The VIEW command does all of the following except

A. provide access to AutoCAD®’s predefined views.
B. provide access to custom views.
C. create a new custom view.
D. display the View toolbar.
Answer» E.
Discussion
28.

To allow you to view 3D models from different points of view, AutoCAD® provides

A. three predefined 3D views.
B. six predefined 3D views.
C. ten predefined 3D views.
D. twelve predefined 3D views.
Answer» D. twelve predefined 3D views.
Discussion
29.

The ISOLINES system variable specifies

A. the number of segments in a tabulated model.
B. the number of contour lines that define a solid model.
C. the direction of contour lines in a solid model.
D. the length of the segments in an extrusion.
Answer» C. the direction of contour lines in a solid model.
Discussion
30.

To create an approximation of a Coons patch in AutoCAD®, use the

A. 3DMESH command.
B. REVSURF command.
C. TABSURF comman
D. EDGESURF command.
Answer» E.
Discussion
31.

Wireframe drawings can be used to

A. show and define the sides of an object.
B. present design ideas to potential clients.
C. calculate volume.
D. determine spatial relationships between objects.
Answer» E.
Discussion
32.

A fillet surface is used to

A. reshape a bicubic Coons patch with smooth curves.
B. round the edges of a planar surface.
C. blend two surfaces together.
D. convert facets into smooth curves.
Answer» D. convert facets into smooth curves.
Discussion
33.

The View option of the UCS command

A. aligns a new UCS parallel to the screen.
B. aligns a new UCS to the selected face of an object.
C. moves the origin of the current UCS to the lower left corner of the screen.
D. applies the current UCS to a specified viewport.
Answer» B. aligns a new UCS to the selected face of an object.
Discussion
34.

The UCS command

A. allows you to manipulate the user coordinate system.
B. controls display of the UCS icon.
C. defines the world coordinate system.
D. allows you to draw in the YZ plane.
Answer» B. controls display of the UCS icon.
Discussion
35.

To avoid surprises when you create a wireframe model, it is a good idea to

A. avoid using object snaps.
B. stay in the default world coordinate system.
C. specify coordinates using the absolute technique.
D. view the model from the top (plan) view while working.
Answer» D. view the model from the top (plan) view while working.
Discussion
36.

To control the type of surface created using the Smooth surface option of the PEDIT command, use the

A. SURFTAB1 system variable.
B. SURFTAB2 system variable.
C. SURFTYPE system variable.
D. EDGESURF command.
Answer» D. EDGESURF command.
Discussion
37.

All of the axes in the 3D coordinate system meet at

A. 60° angles.
B. 90° angles.
C. 120° angles.
D. 135° angles.
Answer» C. 120° angles.
Discussion
38.

To edit a wireframe model, use

A. grips.
B. the WIREDIT command.
C. the SPLINEDIT command.
D. the WEDIT command.
Answer» B. the WIREDIT command.
Discussion
39.

Spatial occupancy enumeration is rarely used in CAD applications because it

A. requires a large amount of memory.
B. is not sufficiently accurate for CAD work.
C. requires an obscure operating system.
D. does not allow 3D solids to be edited.
Answer» B. is not sufficiently accurate for CAD work.
Discussion
40.

Solid models are used more frequently than surface models or wireframes because they

A. result in smaller files.
B. are more accurate.
C. can be viewed from any point in 3D space.
D. allow you to calculate mass properties.
Answer» E.
Discussion
41.

Which AutoCAD command will determine precisely the volume of a complex (or simple) 3D Solid part?

A. AREA
B. MASSPROP
C. VOLUME
D. PART
Answer» C. VOLUME
Discussion
42.

The Spline option of the PEDIT command

A. creates an arc-fit polyline joining each pair of vertices to convert a straight-line polyline into a curve.
B. uses the vertices of the polyline as control points to create a curve approximating a B-spline.
C. generates the linetype in a continuous pattern through the vertices of the polyline.
D. smoothes a polygon mesh surface.
Answer» C. generates the linetype in a continuous pattern through the vertices of the polyline.
Discussion
43.

Surface models are considered to be more advancedthan wireframe models because

A. they can be used to calculate mass properties.
B. they have surfaces (faces).
C. they have volume.
D. they can be used to calculate holding properties and weights.
Answer» C. they have volume.
Discussion
44.

In AutoCAD®, all objects are drawn on the

A. YZ plane.
B. XZ plane.
C. XY plane.
D. ZX plane.
Answer» D. ZX plane.
Discussion
45.

To store and display modeling information, AutoCAD® uses

A. cell decomposition.
B. boundary representations and sweeping.
C. constructive solid geometry.
D. pure primitive instancing.
Answer» C. constructive solid geometry.
Discussion
46.

What is the volume of a cone with a 12′ radius and a 12′ height?

A. 3,216,915.13 cu in
B. 3,162,915.13 cu in
C. 3,126,195.13 cu in
D. 3,126,915.13 cu in
Answer» E.
Discussion
47.

How many grip points does a circle have?

A. 5
B. 4
C. 3
D. 2
Answer» B. 4
Discussion
48.

Which command is used to divide the object into segments having predefined length?

A. Divide
B. Chamfer
C. Trim
D. Measure
Answer» E.
Discussion
49.

Scale command can be accessed easily by typing:

A. SL
B. S
C. SC
D. C
Answer» D. C
Discussion
50.

Which mode allows the user to draw 90o straight lines :

A. Osnap
B. Ortho
C. Linear
D. Polar tracking
Answer» C. Linear
Discussion