engineering+graphics+test
.doc1. This is a conical-shaped recess around a hole, often used to receive a tapered screw head:
A. Boss
B. Spotface
C. Counterbore
D. Countersink
Answer: Option D
2. This is an angled surface used on cylinders to make them easier to handle:
A. Fillet
B. Taper
C. Chamfer
D. Lug
Answer: Option C
3. These are used to attach parts to a cylinder so they won't turn on it:
A. Lugs and bearings
B. Keyseats and bearings
C. Knurls and keys
D. Keys and keyways/keyseats
4. This is a flat or rounded tab protruding from a surface, usually to provide a method for attachment:
A. Lug
B. Boss
C. Chamfer
D. Spotface
Answer: Option A
5. This is a hollow cylinder that is often used as a protective sleeve or guide or as a bearing:
A. Lug
B. Bushing
C. Chamfer
D. Knurl
Answer: Option B
6. This is a rounded exterior blend between surfaces:
A. Fillet
B. Round
C. Taper
D. Chamfer
Answer: Option B
1. If a plane intersects a contoured surface, no line is drawn to represent the edge.
A. True
B. False
Answer: Option B
2. Right-hand and left-hand parts are mirror images and are made to be interchangeable.
A. True
B. False
Answer: Option B
3. A keyway is a small groove cut around the diameter of a cylinder, often where it changes diameter.
A. True
B. False
Answer: Option B
4. A plane surface cannot intersect or be tangent to a contoured surface.
A. True
B. False
Answer: Option B
5. Small curves called runouts are used to represent fillets that connect with plane surfaces tangent to cylinders.
A. True
B. False
Answer: Option A
6. A fillet is a rounded exterior blend between surfaces.
A. True
B. False
Answer: Option B
7.
Knurl is a pattern form on a surface to provide for better gripping or more surface area for attachment.
A. True B. False
Answer: Option A
8.
A counterbore is a cylindrical recess around a hole, usually to receive a bolt head or nut.
A. True B. False
Answer: Option A
9.
Simplified conventional representations that deviate from true orthographic projection may be used to enhance economy and clarity in a drawing.
A. True B. False
Answer: Option A
10.
A lug is a flattened collar or rim around a cylindrical part to allow for attachment.
A. True B. False
Answer: Option B
11.
When a curved surface intersects a plane surface, an edge is formed.
A. True B. False
Answer: Option A
12.
It is not always possible to show all of the drawing views in alignment on a sheet.
A. True B. False
Answer: Option A
13.
A boss is a short raised protrusion above the surface of a part.
A. True B. False
Answer: Option A
1.
The Press-Pull tool will ________ the face of a solid model in the direction it faces.
A. taper
B. extrude
C. spiral
D. none of the above
Answer: Option B
2.
The View toolbar will position the view of the 3-D solid toward the ________.
A. front
B. left side
C. SE isometric
D. all of the above
Answer: Option D
3.
The Free Orbit tool is found on the ____ toolbar.
A. rotate
B. move
C. modify
D. 3-D Move
Answer: Option C
4.
The default position of the UCS icon is positioned at ________ on the AutoCAD grid.
A. 0,0,0
B. 10,10,10
C. 20,20,20
D. None of the above
Answer: Option A
5.
A cylinder can be created by drawing a rectangular shape then the ________ tool.
A. Revolve
B. Sweep
C. Extrude
D. none of the above
Answer: Option A
6.
The MASSPROP shortcut will provide the following information.
A. mass
B. volume
C. bounding box
D. all of the above
Answer: Option D
7.
The 3-D commands on the Modeling toolbar include ________.
A. box
B. sphere
C. extrude
D. all of the above
Answer: Option D
8.
CAD programs which incorporate parametric modeling utilize a system in which the dimensions control the ________.
A. size and shape of the model features
B. perspective of the model
C. shading used to render the model
D. all of the above
Answer: Option A
9.
In order to create one solid model from two or more separate solid shapes the drafter will need to position them and then ________.
A. use Union to join them
B. use the Join command
C. use the Add Parts tool
D. none of the above
Answer: Option A
10.
The Conceptual Visual Style tool is located on the ________ toolbar.
A. Visual Styles
B. Modify
C. 3-D Modeling
D. All of the above
Answer: Option A
1.
To create a hole through a 3-dimensional box the drafter can place a 3-dimensional cylinder into the box and subtract it.
A. True B. False
Answer: Option A
2.
A useful method for using the grid is to set it to Display Grid Beyond Limits.
A. True B. False
Answer: Option A
3.
In 2-dimensional drafting we work on the X and Y axis. By adding the Z axis drafters can develop 3-dimensional models.
A. True B. False
Answer: Option A
4.
The extrude tool will extrude a 2-dimensional shape even if the corners are not closed.
A. True B. False
Answer: Option A
5.
The union command only works on 2-dimensional objects.
A. True B. False
Answer: Option B
6.
Drafters using AutoCAD version 2007 and newer will want to use the workspace called 3D Modeling to create 3D models.
A. True B. False
Answer: Option A
7.
UCS stands for Universal CAD Standards.
A. True B. False
Answer: Option B
8.
The 3-dimensional rotate tool is located on the 3-D View tool bar.
A. True B. False
Answer: Option B
9.
Complex 3-dimensional shapes can be made by combining different 3-D shapes with the union tool.
A. True B. False
Answer: Option A
10.
AutoCAD is typical of parametric modeling programs.
A. True B. False
Answer: Option B
1.
The lines used to create the auxiliary view should appear as ________ in the finished view.
A. Object lines
B. Construction lines
C. Reference lines
D. Construction lines
Answer: Option A
2.
The offset distance for the width (front to back) distance of the auxiliary view is the same distance of the ________ in the top view.
A. Width
B. height
C. length
D. none of the above
Answer: Option A
3.
The principle reason for using an auxiliary view is ________.
A. to eliminate hidden lines
B. to create a true projection plane from an inclined plane in one of the primary views
C. to show cylinders as ellipses
D. to locate center marks
Answer: Option B
4.
Circular shapes appear in this fashion when viewed at an angle other than 90 degrees:
A. Circular B. Elliptical
C. Lengthened D. Angular
Answer: Option B
5.
When adding dimensions to an auxiliary view it will be necessary to use the ________ tool.
A. Linear dimension
B. Aligned dimension
C. Baseline dimension
D. Angle dimension
Answer: Option B
6.
An efficient method for trimming the corners on an auxiliary view is to use the ________.
A. 0 radius fillet
B. Hatch tool
C. Extend tool
D. Grips function
Answer: Option A
7.
In this type of auxiliary view, a break line is used to indicate the imaginary break in the views:
A. Primary B. Secondary
C. Revolved D. Partial
Answer: Option D
8.
When using the descriptive geometry method to create an auxiliary view the drafter should ________.
A. rotate the snap grid to the same angle of the inclined plane
B. offset the right vertical line of the front view
C. rotate the top line of the front view 45 degrees
D. offset the top line of the front view 2 inches
Answer: Option A
9.
This is the most common application for developments and intersections:
A. Sheet metal construction
B. Piping
C. Architecture
D. Mechanical engineering
Answer: Option A
10.
This type of auxiliary view is projected onto a plane that is perpendicular to one of the principal planes of projection:
A. Primary B. Secondary
C. Revolved D. Successive
Answer: Option A
11.
A partial auxiliary view usually shows only features on the ________ of the inclined line and not any projection of other planes.
A. hidden lines
B. plane
C. center lines
D. none of the above
Answer: Option B
12.
A partial auxiliary view is used to show only the ________ in the auxiliary view.
A. projected inclined plane
B. the projected top view
C. the projected side view
D. none of the above
Answer: Option A
13.
This type of surface may be a plane, a single curved surface, or a warped surface:
A. Edge surface
B. Ruled surface
C. Auxiliary surface
D. Developed surface
Answer: Option B
14.
In this type of view, the cutting plane line indicates both the location of the cutting plane and the direction of sight:
A. Removed section
B. Revolved section
C. Auxiliary section
D. Partial section
Answer: Option C
15.
The principle views associated with orthographic projection are ________.
A. Front view
B. Right side view
C. Top view
D. All of the above
Answer: Option D
16.
A secondary auxiliary view is a projection off of the ________.
A. Front view
B. Top view
C. Primary auxiliary view
D. None of the above
Answer: Option C
17.
This type of solid is formed by sweeping a shape along a linear path:
A. Planar solid
B. Revolved solid
C. Warped solid
D. Extruded solid
Answer: Option D
1.
The Offset tool is useful in setting up an auxiliary view.
A. True B. False
Answer: Option A
2.
Auxiliary views allow principal faces of features that are parallel to the standard planes of projection to appear true shape and size.
A. True B. False
Answer: Option B
3.
A ruled surface is one that may be generated by sweeping a generatrix along a path.
A. True B. False
Answer: Option A
4.
A secondary view is always perpendicular to one of the principal views.
A. True B. False
Answer: Option B
5.
Solids bounded by warped surfaces have no group name.
A. True B. False
Answer: Option A
6.
The American Society of Mechanical Engineers provides a set of standards for using auxiliary views.
A. True B. False
Answer: Option A
7.
From primary auxiliary views, a secondary auxiliary view can be drawn.
A. True B. False
Answer: Option A
8.
Another method used to setup an auxiliary view is to align the UCS with the inclined plane.
A. True B. False
Answer: Option B
9.
The center line of a hidden cylinder feature appearing in the front view should line up with the center mark in the corresponding circle which appears in the auxiliary view.
A. True B. False
Answer: Option A
10.
A single-curved surface is a developable ruled surface that can be unrolled to coincide with a cylinder.
A. True B. False
Answer: Option B
11.
An auxiliary view is used on technical drawings to project features on an inclined plane away from one of the primary views in such a way that features such as holes appear correctly.
A. True B. False
Answer: Option A
12.
An intersection drawing is a flat representation or pattern that, when folded together, creates a 3D object.
A. True B. False
Answer: Option B
13.
Measurements are always made at right angles to the reference lines or parallel to the projection lines.
A. True B. False
Answer: Option A
14.
If an auxiliary view is symmetrical, and to save space or time, a half auxiliary view may be drawn.
A. True B. False
Answer: Option A
15.
A double-curved surface is generated by a curved line and has straight-line elements.
A. True B. False
Answer: Option B
16.
The intersection of a plane and a circular cylinder is called a conic section.
A. True B. False
Answer: Option B
17.
Reference lines are always at right angles to the projection lines between the views.
A. True B. False
Answer: Option A
18.
A primary auxiliary view does not need to be parallel to the associated inclined plane.
A. True B. False
Answer: Option B
19.
A reference plane appears as a line in an adjacent view.
A. True B. False
Answer: Option B
20.
A Secondary Auxiliary view is a projection from the first auxiliary view.
A. True B. False
Answer: Option A
21.
Auxiliary views of 3-dimensional parts can be easily created with AutoCAD.
A. True B. False
Answer: Option A
22.
Warped surfaces cannot be unrolled or unfolded to lie flat.
A. True B. False
Answer: Option A
23.
Generally, hidden lines should be omitted in auxiliary views.
A. True B. False
24.
Revolution is a method of determining the true length and true size of inclined and oblique lines and planes.
A. True B. False
Answer: Option A
25.
An auxiliary view is an orthographic view that is not a standard projection.
A. True B. False
Answer: Option A
26.
Any inclined surface can be shown in true shape when the appropriate auxiliary view is used.
A. True B. False
Answer: Option A
1.
Architectural dimensioning standards allow for the placement of dimensions inside the floor plan. These inside dimensions locate interior ________.
A. door openings and walls
B. centers of cabinets
C. windows
D. all of the above
Answer: Option A
2.
When dimensioning architectural drawings architects will utilize both ________ and ________ options.
A. Baseline and continuous
B. Baseline and linear
C. Quick dim and linear
D. Linear and continuous
Answer: Option D
3.
Architectural dimensioning is usually done in ________.
A. Even numbers
B. Feet and inches
C. Feet only
D. Inches only
Answer: Option B
4.
Some of the standard AutoCAD text styles used in architectural drawings includes ________.
A. CityBlueprint
B. CountryBlueprint
C. Stylus BT
D. All of the above
Answer: Option D
5.
Dimension text is generally placed above the ________ line.
A. Dimension B. extension
C. center D. leader
Answer: Option A
6.
The architectural and construction industries use the United States National CAD standard (NCS) system on many ________ projects.
A. residential
B. commercial
C. aerospace
D. publicly funded
Answer: Option D
7.
There should be a visible gap between the wall and the ________ line.
A. dimension B. extension
C. center D. leader
Answer: Option B
8.
Dimensions are used on the elevation plan to describe ________.
A. Finished floor elevations
B. Roof overhangs
C. Roof pitch angles
D. All of the above
Answer: Option D
9.
The second line of dimensions out from the plan generally includes ________.
A. Centers of doors and windows
B. The distances between outside walls and interior walls.
C. The measurement from the outside of the brick to the inside of the exterior wall.
D. The measurement from one outside corner to the opposite outside corner.
Answer: Option B
10.
The dimension text size is determined by what the architect deems necessary in ________.
A. Model space
B. Paper space
C. The Finished plot
D. The PDF file
Answer: Option C
1.
Tolerances in an architectural drawing are just as close as tolerances used in mechanical drawings.
A. True B. False
Answer: Option B
2.
Drafters usually begin a set of dimensions from the inside edge of an exterior wall.
A. True B. False
Answer: Option B
3.
The total dimension of the front side should match the total dimension of the back side.
A. True B. False
Answer: Option A
4.
The text style used on an architectural drawing is determined by the drafter.
A. True B. False
Answer: Option B
5.
The dimensioning standards used by a typical architectural firm were probably developed by the architects, designers, and drafters in the firm.
A. True B. False
Answer: Option A
6.
Text and dimensions are aligned on the drawing so they can be easily read from the bottom and right side of the sheet.
A. True B. False
Answer: Option A
7.
Dimensioning to the edges of doors and windows is the preferred method by most architectural drafters.
A. True B. False
Answer: Option B
8.
Architectural dimensioning usually relies on tick marks or dots rather than arrow points.
A. True B. False
Answer: Option A
9.
Minor errors in dimensioning on an architectural drawing can result in major construction problems on the job site.
A. True B. False
Answer: Option A
10.
Architectural drafters are usually expected to place dimensions to the CAD standards established by the firm.
A. True B. False
Answer: Option A
1.
The condition of a part when it contains the least amount of material is referred to as ________.
A. smallest
B. LMC
C. MMC
D. actual size
Answer: Option B
2.
This is used to indicate that a surface is to be machined:
A. Finish mark
B. Machining mark
C. Roughness indicator
D. Coordinate mark
Answer: Option A
3.
The ________ tool on the Dimension tool bar places the length of an arch on a drawing.
A. Arc Radius
B. Arc Length
C. Radius
D. Diameter
Answer: Option B
4.
How can the drafter prevent AutoCAD from placing or stacking another center mark on a circle when adding a diameter dimension to it?
A. Explode the dimension and then erase the center mark.
B. Use the Properties dialog box to turn off the center mark of the dimension.
C. It can't be done.
D. Use the trim tool to take away the stacked center mark.
Answer: Option B
5.
In this type of dimensioning, allowance must be made for bends:
A. Angular
B. Tolerance
C. Datum
D. Sheet metal
Answer: Option D
6.
One way to evenly space dimensions on a drawing is to use the ________.
A. Dimension Space tool
B. Linear tool
C. Continue tool
D. Baseline tool
Answer: Option A
7.
The ________ tool on the Dimension tool bar will place several dimensions at one time by using a selection box placed over several part features.
A. Linear
B. Continue
C. Baseline
D. Quick Dimension
Answer: Option D
8.
A circular arc is dimensioned in the view where you see its true shape by giving the value for its:
A. Diameter
B. Arc length
C. Radius
D. Chord length
Answer: Option C
9.
This is the total amount that the feature on the actual part is allowed to vary from what is specified by the dimension:
A. Allowance B. Tolerance
C. Specification D. Difference
Answer: Option B
10.
The ________ dimension tool will place the length of an angled line.
A. Aligned B. Angle
C. Linear D. Radial
Answer: Option A
11.
Placement of dimensions on a drawing is controlled by ________.
A. ANSI
B. The design engineer
C. Corporate drafting standards
D. All of the above
Answer: Option D
12.
Baseline dimensions are referenced from a common geometric feature known as a ________.
A. edge
B. corner
C. datum
D. point of reference
Answer: Option C
13.
Given a situation in which the drafter has crossed extension lines in a drawing what can be done to clean up the point of crossing?
A. Use the Modify tool to clean up the extension lines.
B. Use the Tolerance tool to clean up the extension lines.
C. Use the Break tool to clean up the extension lines.
D. Use the stretch tool to clean up the extension lines.
Answer: Option A
14.
This is a thin solid line directing attention to a note or dimension and starting with an arrowhead or dot:
A. Dimension line
B. Extension line
C. Leader
D. Specification
Answer: Option C
15.
The maximum and minimum sizes of a feature are identified by a ________ tolerance.
A. Limits B. GD&T
C. reference D. allowance
Answer: Option A
16.
This is a line terminated by arrowheads, indicating the direction and extent of a dimension:
A. Dimension line
B. Extension line
C. Arrowhead line
D. Centerline
Answer: Option A
17.
In U.S. structural and architectural drafting, all dimensions of this length are usually expressed in feet and inches:
A. One inch or over
B. One foot or over
C. One yard or over
D. One rod or over
Answer: Option B
1.
The inch is the commonly used unit for most metric engineering drawings.
A. True B. False
Answer: Option B
2.
Most mechanical drawings will include tolerance information in or near the drawing title block.
A. True B. False
Answer: Option A
3.
When designing mechanical devices, the designer must consider what the allowable variation in size between mating parts can be.
A. True B. False
Answer: Option A
4.
Fillet radii can be given in a general note.
A. True B. False
Answer: Option A
5.
An external cylindrical shape is dimensioned where it appears circular.
A. True B. False
Answer: Option B
6.
Where the decimal-inch dimension is used, a zero is not used before the decimal point of values less than 1.
A. True B. False
Answer: Option A
7.
It is always acceptable to dimension to a hidden feature.
A. True B. False
Answer: Option B
8.
When a finished part is measured, it may vary slightly from the exact dimension specified.
A. True B. False
Answer: Option A
9.
Tolerance issues are primarily a concern in manufacturing rather than in the design and drafting process.
A. True B. False
Answer: Option B
10.
Dimensions are given in the form of distances, angles, and notes only when using metric units.
A. True B. False
Answer: Option B
11.
The nominal size of a feature is the exact measurement of the feature after the tolerance has been applied to it.
A. True B. False
Answer: Option A
12.
Drawings are usually made to a scale, which is indicated in the title block.
A. True B. False
Answer: Option A
13.
A set of two mutually perpendicular datum planes is required for coordinate dimensioning.
A. True B. False
Answer: Option B
14.
Although an engineer has placed dimensions in specific locations the drafter has the freedom to arrange them as he deems necessary.
A. True B. False
Answer: Option B
15.
Typically, all dimension values and notes are lettered horizontally and should read from the bottom of the sheet.
A. True B. False
Answer: Option A
16.
A heavy straight line should be drawn under all dimension values that are to scale.
A. True B. False
Answer: Option B
17.
By adding dimensions to a technical drawing the drafter is providing information about the size and location of features of a part.
A. True B. False
Answer: Option A
18.
An extension line is a thin, dark, solid line that extends from a point on the drawing to which a dimension refers.
A. True B. False
Answer: Option A
19.
It is permissible to letter a dimension value over any line on the drawing.
A. True B. False
Answer: Option B
20.
It is more difficult to manufacture a part designed using two decimal places than the same part using four decimal places.
A. True B. False
Answer: Option B
21.
In a group of parallel dimension lines, the dimension values should be staggered.
A. True B. False
Answer: Option A
22.
When extension lines or centerlines cross visible object lines, gaps should not be left in the lines.
A. True B. False
Answer: Option A
23.
The American Society of Mechanical Engineers provides a set of common standards used by industry for placement of dimensions.
A. True B. False
Answer: Option A
24.
Longer dimension lines are nearest the object outline.
A. True B. False
Answer: Option B
25.
A metric dimension that is a whole number does not show a decimal point or a zero.
A. True B. False
Answer: Option A
26.
Dimension lines should not cross extension lines.
A. True B. False
Answer: Option A
27.
Avoid dimensioning to hidden lines.
A. True B. False
Answer: Option A
28.
The drafter should always try to dimension to the profile view of an object when possible.
A. True B. False
Answer: Option A
1.
Using this as a communication and design review tool can help shorten the process and eliminate productivity barriers:
A. Development plans
B. Portable document files
C. The Internet and e-mail
D. Gantt charts
Answer: Option C
2.
If designs require changes, they should be documented with:
A. Development plans
B. Product proposals
C. Document reviews
D. Engineering change orders
Answer: Option D
3.
Once a drawing is determined to be complete, the title block is used to document the change from:
A. A draft to a finished drawing
B. A finished to a working drawing
C. An assembly to a finished drawing
D. A working drawing to a draft
Answer: Option A
4.
Drawings created with commercial software are typically saved as:
A. Rapid prototypes
B. Electronic files
C. Draft drawings
D. Change orders
Answer: Option B
1.
To be useful, drawings must be stored electronically in a manner that satisfies the requirements for a static snapshot of the design at the time of release.
A. True B. False
Answer: Option A
2.
PERT or Gantt charts are used specifically to track time engineering change orders.
A. True B. False
Answer: Option B
3.
Efficient document management is only a minor part of effective concurrent engineering practices.
A. True B. False
Answer: Option B
4.
It is a good idea to have a single directory in which all employees store work.
A. True B. False
5.
Because electronically stored files can easily be altered, they may not be considered acceptable for documentation.
A. True B. False
Answer: Option A
6.
Design milestones and reviews help ensure that the design process is timely.
A. True B. False
Answer: Option A
7.
Legal standards for how long engineering drawings need to be retained are standardized in the United States.
A. True B. False
Answer: Option B
8.
It is important to establish a procedure and name files systematically.
A. True B. False
Answer: Option A
9.
Electronic files for the most part have replaced the use of microfilm and microfiche.
A. True B. False
Answer: Option A
10.
After a drawing has been released, an engineering change order is used to document and approve drawing changes.
A. True B. False
Answer: Option A
11.
Design databases can be used to streamline the design process.
A. True B. False
Answer: Option A
12.
Quality standards in some industries allow for electronic documents to serve as a permanent record if they are properly controlled.
A. True B. False
Answer: Option A
13.
Individual companies often have their own standards of data management.
A. True B. False
Answer: Option A
1.
Spur gear design normally begins with selecting this:
A. Rack size
B. Tooth size
C. Gear size
D. Pitch diameter
Answer: Option D
2.
The most common geometric form used in gears today is this:
A. Involute profile
B. Convolute profie
C. Base circle
D. Spur circle
Answer: Option A
3.
This is a curve showing the displacement of the follower as ordinates on a base line that represents one revolution of the cam:
A. Displacement diagram
B. Follower
C. Cam cycle
D. Reciprocation chart
Answer: Option A
4.
Gear teeth formed on a flat surface are called this:
A. Pinion B. Rack
C. Spur D. Teeth
Answer: Option B
5.
These gears transmit power between shafts whose axes intersect at any angle:
A. Worm gears
B. Spur gears
C. Bevel gears
D. Racks
Answer: Option C
1.
Cams are used to produce regular repeating motions.
A. True B. False
Answer: Option B
2.
In working drawings for worm gears, gear teeth are omitted and the gear blank is represented conventionally.
A. True B. False
Answer: Option A
3.
In working drawings with teeth cut to a standard shape, individual teeth typically are not shown.
A. True B. False
Answer: Option A
4.
On detail drawings, the worm and gear are usually drawn in the same detail drawing.
A. True B. False
Answer: Option B
5.
When laying out a gear, the number of spaces should be twice the number of teeth.
A. True B. False
Answer: Option A
6.
Working drawings for bevel gears give both the dimensions of the gear blank and the data necessary for cutting the teeth.
A. True B. False
Answer: Option B
7.
A worm is a screw with a thread shaped like a rack tooth.
A. True B. False
Answer: Option A
8.
The motion of the follower as it rises or falls depends on the shape of the curves in the displacement diagram.
A. True B. False
Answer: Option A
9.
Teeth are spaced by laying out equal angles.
A. True B. False
Answer: Option A
10.
When the follower movement is in a plane parallel to the cam shaft, an irregular cam must be employed.
A. True B. False
Answer: Option B
11.
ANSI/AGMA publishes detailed standards for gear design and drawings.
A. True B. False
Answer: Option A
12.
Proportions and shapes of gear teeth are not standardized.
A. True B. False
Answer: Option B
13.
Gears are used to transmit power and rotating or reciprocating motion from one machine part to another.
A. True B. False
Answer: Option A
14.
Bevel gear teeth have the same involute shape as teeth on spur gears but are tapered toward the cone apex.
A. True B. False
Answer: Option A
15.
Worm wheels are similar to helical gears cut to conform to the shape of the worm.