UTA MAE 1351 EXAM 3 –QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS
RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
*Core Domains
Geometric Dimensioning and Tolerancing (GD&T) Principles
Orthographic Projection and Multi-view Layouts
Sectional Views and Auxiliary Views
Fasteners, Threads, and Assembly Drawings
Dimensioning Standards and ASME Y14.5 Compliance
Tolerance Stacks and Fit Classifications
Solid Modeling Fundamentals and Feature-Based Design
Engineering Ethics and Design Documentation Control
*Introduction
This comprehensive exam assessment serves to evaluate students' mastery of intermediate computer-
aided design, spatial visualization, and engineering documentation standards. It assesses foundational
skills in converting three-dimensional concepts into standardized two-dimensional production drawings,
applying geometric tolerances, and analyzing mechanical assemblies. The assessment consists of
multiple-choice and scenario-based questions designed to mimic real-world engineering design challenges
and manufacturing constraints. Candidates must apply critical thinking, standard engineering principles,
, and ethical documentation practices to solve practical design, tolerance, and manufacturing problems,
ensuring clear communication across the lifecycle of product development.
Section One: Questions 1–100
Question 1
Which type of projection method is primarily used in North America for engineering drawings, where the object is
placed between the observer and the projection plane?
A. First-angle projection
B. Second-angle projection
C. Third-angle projection
D. Fourth-angle projection
🟢 C. Third-angle projection
🔴 RATIONALE: Third-angle projection is the standard layout used in North America, placing the projection plane
between the observer and the object, resulting in top views placed above front views.
Question 2
When applying geometric dimensioning and tolerancing (GD&T), which symbol represents the condition where a
feature contains the maximum amount of material within its stated limits?
A. LMC
B. MMC
C. RFS
D. statistical tolerance
🟢 B. MMC
,🔴 RATIONALE: Maximum Material Condition (MMC) indicates that a feature contains the maximum amount of
material, such as a maximum shaft diameter or minimum hole diameter.
Question 3
What type of line is used in engineering drawings to represent an edge or boundary that is hidden from view in a
specific projection?
A. Continuous thick line
B. Chain thin double-dashed line
C. Dashed narrow line
D. Long-dashed dotted line
🟢 C. Dashed narrow line
🔴 RATIONALE: Hidden lines are represented by dashed narrow lines to show features, edges, or contours that
are obscured behind other surfaces in that view.
Question 4
In an assembly drawing, what is the primary purpose of a Bill of Materials (BOM)?
A. To show the tool paths required for CNC manufacturing
B. To list and identify every individual component, its quantity, and part number
C. To specify the geometric tolerances of the mating surfaces
D. To detail the engineering change order history
🟢 B. To list and identify every individual component, its quantity, and part number
🔴 RATIONALE: The Bill of Materials (BOM) is an itemized list providing essential inventory data, including part
names, quantities, materials, and catalog numbers for assemblies.
, Question 5
An engineer must design a shaft and hole fit where the parts must always remain free to rotate or slide relative to
each other. Which class of fit is required?
A. Interference fit
B. Transition fit
C. Clearance fit
D. Line-to-line fit
🟢 C. Clearance fit
🔴 RATIONALE: A clearance fit ensures an operational gap between the mating parts across their entire
tolerance ranges, permitting relative rotation or translation.
Question 6
According to the ASME Y14.5 standard, what is the default rule regarding the variation of form when a geometric
tolerance is not explicitly specified?
A. Rule 1: The surface limits of a size feature control its form perfectly at MMC
B. Rule 2: Regardless of feature size applies to all tolerance values
C. Rule 3: All dimensions must be checked using optical comparators
D. Rule 4: Profile tolerances override limit dimensioning automatically
🟢 A. Rule 1: The surface limits of a size feature control its form perfectly at MMC
🔴 RATIONALE: ASME Y14.5 Rule 1 states that the limits of size prescribe the extent to which variations in its
geometric form are allowed; perfect form is required at MMC.
RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
*Core Domains
Geometric Dimensioning and Tolerancing (GD&T) Principles
Orthographic Projection and Multi-view Layouts
Sectional Views and Auxiliary Views
Fasteners, Threads, and Assembly Drawings
Dimensioning Standards and ASME Y14.5 Compliance
Tolerance Stacks and Fit Classifications
Solid Modeling Fundamentals and Feature-Based Design
Engineering Ethics and Design Documentation Control
*Introduction
This comprehensive exam assessment serves to evaluate students' mastery of intermediate computer-
aided design, spatial visualization, and engineering documentation standards. It assesses foundational
skills in converting three-dimensional concepts into standardized two-dimensional production drawings,
applying geometric tolerances, and analyzing mechanical assemblies. The assessment consists of
multiple-choice and scenario-based questions designed to mimic real-world engineering design challenges
and manufacturing constraints. Candidates must apply critical thinking, standard engineering principles,
, and ethical documentation practices to solve practical design, tolerance, and manufacturing problems,
ensuring clear communication across the lifecycle of product development.
Section One: Questions 1–100
Question 1
Which type of projection method is primarily used in North America for engineering drawings, where the object is
placed between the observer and the projection plane?
A. First-angle projection
B. Second-angle projection
C. Third-angle projection
D. Fourth-angle projection
🟢 C. Third-angle projection
🔴 RATIONALE: Third-angle projection is the standard layout used in North America, placing the projection plane
between the observer and the object, resulting in top views placed above front views.
Question 2
When applying geometric dimensioning and tolerancing (GD&T), which symbol represents the condition where a
feature contains the maximum amount of material within its stated limits?
A. LMC
B. MMC
C. RFS
D. statistical tolerance
🟢 B. MMC
,🔴 RATIONALE: Maximum Material Condition (MMC) indicates that a feature contains the maximum amount of
material, such as a maximum shaft diameter or minimum hole diameter.
Question 3
What type of line is used in engineering drawings to represent an edge or boundary that is hidden from view in a
specific projection?
A. Continuous thick line
B. Chain thin double-dashed line
C. Dashed narrow line
D. Long-dashed dotted line
🟢 C. Dashed narrow line
🔴 RATIONALE: Hidden lines are represented by dashed narrow lines to show features, edges, or contours that
are obscured behind other surfaces in that view.
Question 4
In an assembly drawing, what is the primary purpose of a Bill of Materials (BOM)?
A. To show the tool paths required for CNC manufacturing
B. To list and identify every individual component, its quantity, and part number
C. To specify the geometric tolerances of the mating surfaces
D. To detail the engineering change order history
🟢 B. To list and identify every individual component, its quantity, and part number
🔴 RATIONALE: The Bill of Materials (BOM) is an itemized list providing essential inventory data, including part
names, quantities, materials, and catalog numbers for assemblies.
, Question 5
An engineer must design a shaft and hole fit where the parts must always remain free to rotate or slide relative to
each other. Which class of fit is required?
A. Interference fit
B. Transition fit
C. Clearance fit
D. Line-to-line fit
🟢 C. Clearance fit
🔴 RATIONALE: A clearance fit ensures an operational gap between the mating parts across their entire
tolerance ranges, permitting relative rotation or translation.
Question 6
According to the ASME Y14.5 standard, what is the default rule regarding the variation of form when a geometric
tolerance is not explicitly specified?
A. Rule 1: The surface limits of a size feature control its form perfectly at MMC
B. Rule 2: Regardless of feature size applies to all tolerance values
C. Rule 3: All dimensions must be checked using optical comparators
D. Rule 4: Profile tolerances override limit dimensioning automatically
🟢 A. Rule 1: The surface limits of a size feature control its form perfectly at MMC
🔴 RATIONALE: ASME Y14.5 Rule 1 states that the limits of size prescribe the extent to which variations in its
geometric form are allowed; perfect form is required at MMC.
