GD&T Final Exam Updated Study Guide
Actual Questions and CORRECT Answers
The ____ system is the least accurate measurement system. - CORRECT
ANSWER cubit
A machinist might be able to help a designer by telling him or her ____. - CORRECT
ANSWER All of the above.
The current distance standard for the meter is based on the ____. - CORRECT
ANSWER wavelength of a certain color of light
The ____ measurement unit must be used when working to the current dimensioning and
tolerancing standard. - CORRECT ANSWER inch or millimeter
A(n) ____ must be able to understand dimensions and tolerances because this person is
responsible for verifying that the produced parts meet the product requirements. - CORRECT
ANSWER inspector
Producibility of a design can be improved the most by ____ working to optimize the design. -
CORRECT ANSWER a design team
Tolerance values should be ____. - CORRECT ANSWER calculated to ensure proper
fit and function
A(n) ____ is responsible for dimensioning a part so that the functional needs are met and the
part is producible. - CORRECT ANSWER designer
To correctly apply tolerances, it is necessary to know the tolerance symbols and what they
mean. It is also necessary to be able to ____ tolerance values. - CORRECT
ANSWER calculate
,Standard tolerance application methods are required since inconsistent application methods
would result in unclear requirements being shown. - CORRECT ANSWER true
Working from a drawing with incorrectly applied tolerances is likely to result in
disagreements about whether or not the parts are properly made. - CORRECT
ANSWER True
Measurements can be made more accurately when using the inch dimensioning system than
when using the metric system. - CORRECT ANSWER False
If a standardized symbol does not exist for a special need, it is a good idea to create one and
use it on the drawing. - CORRECT ANSWER False
Interpretation of a drawing is the ability to determine part requirements from what is shown
when the drawing complies with standards. - CORRECT ANSWER True
Before accurate distance standards existed, a cubit was the length of whose forearm? -
CORRECT ANSWER pharaoh
Why is it necessary to have an accurate distance standard in industry? - CORRECT
ANSWER It is only possible to specify tolerances that require accurate measurements
if the distance standard is accurate.
Explain why an incorrectly applied tolerance can be a problem. - CORRECT
ANSWER If the tolerance is not applied in compliance with the standard, then there is
no defined meaning and various people might make different interpretations of the tolerance.
Cite one example of how a machinist can help a designer apply dimensions and tolerances in
the best manner. - CORRECT ANSWER The machinist knows machine capabilities
and how features can be produced. Providing information to the designer about the machine
capabilities and limitations helps the designer dimension the part in a manner that it can be
produced.
,Show a general note that would be included on a drawing that primarily has millimeter
dimensions on it. - CORRECT ANSWER DIMENSIONS ARE SHOWN IN
MILLIMETERS or DIMENSIONS ARE SHOWN IN MILLIMETERS UNLESS
INDICATED OTHERWISE
Why is it necessary for a tool designer to be able to interpret dimensions and tolerances? -
CORRECT ANSWER The tool designer designs tools such that the drawing tolerances
will be achieved when the parts are made. If the tool designer does not understand the
tolerances, there is a good chance that tools will be incorrectly designed.
____ reduce the number of words used on a drawing. - CORRECT ANSWER Symbols
Symbols are ____ abbreviations. - CORRECT ANSWER preferred in place of
The proportions for dimensioning symbols are ____. - CORRECT ANSWER based on
the character height used for dimensions
Dimensioning symbols are usually placed ____ the number to which they are applied. -
CORRECT ANSWER in front of
Straightness is a type of ________ tolerance. - CORRECT ANSWER form
Perpendicularity is a type of ____ tolerance. - CORRECT ANSWER orientation
The first compartment in a feature control frame ____. - CORRECT ANSWER must
always show the tolerance symbol
A feature control frame may include a diameter symbol in the compartment with the ____. -
CORRECT ANSWER tolerance value
, Position tolerances applied to threads control the location of the ____ unless noted otherwise.
- CORRECT ANSWER pitch diameter
A datum feature is identified with a ____. - CORRECT ANSWER letter inside a square
A dimension on a drawing may be made basic by ____. - CORRECT
ANSWER drawing a rectangle around it
The letter X with a space on each side of it means "by." - CORRECT ANSWER True
Flatness is a form tolerance. - CORRECT ANSWER True
Material condition symbols are not used in feature control frames. - CORRECT
ANSWER False
Some feature control frames are not required to include datum feature references. -
CORRECT ANSWER True
A dimension value may be identified as basic. - CORRECT ANSWER True
The shapes of tolerancing symbols do not have any relationship to the indicated control. -
CORRECT ANSWER False
In the chamfer note showing .25 X .25, the symbol X is read as the word _________. -
CORRECT ANSWER by
A rectangle drawn around a dimension value indicates that the dimension is
______________________________. - CORRECT ANSWER basic
Actual Questions and CORRECT Answers
The ____ system is the least accurate measurement system. - CORRECT
ANSWER cubit
A machinist might be able to help a designer by telling him or her ____. - CORRECT
ANSWER All of the above.
The current distance standard for the meter is based on the ____. - CORRECT
ANSWER wavelength of a certain color of light
The ____ measurement unit must be used when working to the current dimensioning and
tolerancing standard. - CORRECT ANSWER inch or millimeter
A(n) ____ must be able to understand dimensions and tolerances because this person is
responsible for verifying that the produced parts meet the product requirements. - CORRECT
ANSWER inspector
Producibility of a design can be improved the most by ____ working to optimize the design. -
CORRECT ANSWER a design team
Tolerance values should be ____. - CORRECT ANSWER calculated to ensure proper
fit and function
A(n) ____ is responsible for dimensioning a part so that the functional needs are met and the
part is producible. - CORRECT ANSWER designer
To correctly apply tolerances, it is necessary to know the tolerance symbols and what they
mean. It is also necessary to be able to ____ tolerance values. - CORRECT
ANSWER calculate
,Standard tolerance application methods are required since inconsistent application methods
would result in unclear requirements being shown. - CORRECT ANSWER true
Working from a drawing with incorrectly applied tolerances is likely to result in
disagreements about whether or not the parts are properly made. - CORRECT
ANSWER True
Measurements can be made more accurately when using the inch dimensioning system than
when using the metric system. - CORRECT ANSWER False
If a standardized symbol does not exist for a special need, it is a good idea to create one and
use it on the drawing. - CORRECT ANSWER False
Interpretation of a drawing is the ability to determine part requirements from what is shown
when the drawing complies with standards. - CORRECT ANSWER True
Before accurate distance standards existed, a cubit was the length of whose forearm? -
CORRECT ANSWER pharaoh
Why is it necessary to have an accurate distance standard in industry? - CORRECT
ANSWER It is only possible to specify tolerances that require accurate measurements
if the distance standard is accurate.
Explain why an incorrectly applied tolerance can be a problem. - CORRECT
ANSWER If the tolerance is not applied in compliance with the standard, then there is
no defined meaning and various people might make different interpretations of the tolerance.
Cite one example of how a machinist can help a designer apply dimensions and tolerances in
the best manner. - CORRECT ANSWER The machinist knows machine capabilities
and how features can be produced. Providing information to the designer about the machine
capabilities and limitations helps the designer dimension the part in a manner that it can be
produced.
,Show a general note that would be included on a drawing that primarily has millimeter
dimensions on it. - CORRECT ANSWER DIMENSIONS ARE SHOWN IN
MILLIMETERS or DIMENSIONS ARE SHOWN IN MILLIMETERS UNLESS
INDICATED OTHERWISE
Why is it necessary for a tool designer to be able to interpret dimensions and tolerances? -
CORRECT ANSWER The tool designer designs tools such that the drawing tolerances
will be achieved when the parts are made. If the tool designer does not understand the
tolerances, there is a good chance that tools will be incorrectly designed.
____ reduce the number of words used on a drawing. - CORRECT ANSWER Symbols
Symbols are ____ abbreviations. - CORRECT ANSWER preferred in place of
The proportions for dimensioning symbols are ____. - CORRECT ANSWER based on
the character height used for dimensions
Dimensioning symbols are usually placed ____ the number to which they are applied. -
CORRECT ANSWER in front of
Straightness is a type of ________ tolerance. - CORRECT ANSWER form
Perpendicularity is a type of ____ tolerance. - CORRECT ANSWER orientation
The first compartment in a feature control frame ____. - CORRECT ANSWER must
always show the tolerance symbol
A feature control frame may include a diameter symbol in the compartment with the ____. -
CORRECT ANSWER tolerance value
, Position tolerances applied to threads control the location of the ____ unless noted otherwise.
- CORRECT ANSWER pitch diameter
A datum feature is identified with a ____. - CORRECT ANSWER letter inside a square
A dimension on a drawing may be made basic by ____. - CORRECT
ANSWER drawing a rectangle around it
The letter X with a space on each side of it means "by." - CORRECT ANSWER True
Flatness is a form tolerance. - CORRECT ANSWER True
Material condition symbols are not used in feature control frames. - CORRECT
ANSWER False
Some feature control frames are not required to include datum feature references. -
CORRECT ANSWER True
A dimension value may be identified as basic. - CORRECT ANSWER True
The shapes of tolerancing symbols do not have any relationship to the indicated control. -
CORRECT ANSWER False
In the chamfer note showing .25 X .25, the symbol X is read as the word _________. -
CORRECT ANSWER by
A rectangle drawn around a dimension value indicates that the dimension is
______________________________. - CORRECT ANSWER basic
