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What is a half view?
What is a half view?
A local view represents the entire object including all features.
A local view represents the entire object including all features.
False
What is the purpose of a partial view?
What is the purpose of a partial view?
To represent portions of the part that clarify features.
In a half view, the __________ acts as a line of symmetry.
In a half view, the __________ acts as a line of symmetry.
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Match the following views with their definitions:
Match the following views with their definitions:
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When is it advisable to show symmetrical features in adjacent views?
When is it advisable to show symmetrical features in adjacent views?
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A break line is always required in a half view representation.
A break line is always required in a half view representation.
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What does the center line in a half view signify?
What does the center line in a half view signify?
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What is the primary purpose of using conventions in orthographic writing?
What is the primary purpose of using conventions in orthographic writing?
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Incompleted views are always more difficult to read than completed views.
Incompleted views are always more difficult to read than completed views.
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What is the function of using a dash line to represent hidden edges in orthographic projections?
What is the function of using a dash line to represent hidden edges in orthographic projections?
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The ________ view places the side view beside the top view to save drawing space.
The ________ view places the side view beside the top view to save drawing space.
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Match the type of convention practice with its corresponding description:
Match the type of convention practice with its corresponding description:
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Which of the following is NOT a type of convention practice?
Which of the following is NOT a type of convention practice?
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Using conventions in orthographic writing often increases the effort required for drafting.
Using conventions in orthographic writing often increases the effort required for drafting.
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The practice of eliminating a feature not clearly seen from a selected viewing direction is called ________ side view.
The practice of eliminating a feature not clearly seen from a selected viewing direction is called ________ side view.
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What is the primary function of an enlarged view in orthographic projection?
What is the primary function of an enlarged view in orthographic projection?
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An enlarged view must include both a name and the scale used.
An enlarged view must include both a name and the scale used.
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What is the definition of a non-existing line of intersection?
What is the definition of a non-existing line of intersection?
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The _____ view is used to give the impression that holes are at symmetrical positions.
The _____ view is used to give the impression that holes are at symmetrical positions.
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In the aligned view convention, what does a well-proportioned alignment convey?
In the aligned view convention, what does a well-proportioned alignment convey?
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True projections are always misleading in representation.
True projections are always misleading in representation.
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What indicates the scale used in an enlarged view?
What indicates the scale used in an enlarged view?
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Which of the following dimensions denotes a location dimension?
Which of the following dimensions denotes a location dimension?
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When dimensioning an arc, it is acceptable for the dimension figure and arrowhead to overlap with the arc.
When dimensioning an arc, it is acceptable for the dimension figure and arrowhead to overlap with the arc.
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What is the purpose of using the letter 'R' before the figures when dimensioning an arc?
What is the purpose of using the letter 'R' before the figures when dimensioning an arc?
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When dimensioning an angle, the circular dimension line should have the center at the __________ of the angle.
When dimensioning an angle, the circular dimension line should have the center at the __________ of the angle.
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Match the following dimensions with their descriptions:
Match the following dimensions with their descriptions:
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What is a typical angle for a leader line when dimensioning arcs?
What is a typical angle for a leader line when dimensioning arcs?
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If all fillets and rounds are uniform in size, dimensions must always be included.
If all fillets and rounds are uniform in size, dimensions must always be included.
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What type of dimension line should be used when the center of an arc is outside the sheet?
What type of dimension line should be used when the center of an arc is outside the sheet?
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Which method places dimension figures so they can be read from the bottom and right side of the drawing?
Which method places dimension figures so they can be read from the bottom and right side of the drawing?
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The ISO standard specifies the unit of length dimension using the symbol 'mm'.
The ISO standard specifies the unit of length dimension using the symbol 'mm'.
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In which dimensioning method are minor divisions of angle expressed in minutes and seconds?
In which dimensioning method are minor divisions of angle expressed in minutes and seconds?
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The dimension figures can be read from the bottom of the drawing in the __________ method.
The dimension figures can be read from the bottom of the drawing in the __________ method.
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Match the dimensioning method with its description:
Match the dimensioning method with its description:
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What should be avoided when drafting dimension figures?
What should be avoided when drafting dimension figures?
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What is the basic purpose of dimensioning in engineering drawings?
What is the basic purpose of dimensioning in engineering drawings?
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Notes should be placed close to the feature they apply to in engineering drawings.
Notes should be placed close to the feature they apply to in engineering drawings.
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What symbol should be placed before the diameter when indicating a cylinder's size in a longitudinal view?
What symbol should be placed before the diameter when indicating a cylinder's size in a longitudinal view?
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Location dimensions for holes must be given from their center lines.
Location dimensions for holes must be given from their center lines.
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What is the primary purpose of using leader lines in hole dimensioning?
What is the primary purpose of using leader lines in hole dimensioning?
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A ______ hole goes through the thickness, while a blind hole does not.
A ______ hole goes through the thickness, while a blind hole does not.
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Which practice is recommended for extension lines?
Which practice is recommended for extension lines?
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Match the following hole types with their descriptions:
Match the following hole types with their descriptions:
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Extension lines can be used as dimension lines in a drawing.
Extension lines can be used as dimension lines in a drawing.
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What should be indicated for a chamfer dimension in a drawing?
What should be indicated for a chamfer dimension in a drawing?
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Study Notes
Chapter 5: Convention Practice in Orthographic Writing
- Orthographic writing conventions are commonly accepted practices that disregard some strict rules of orthographic projection. These conventions improve the readability and efficiency of drawings.
Topics
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Definition: Conventions are commonly accepted practices that disregard some strict rules of orthographic projection, aiming for a more readable multiview representation compared to a strictly projected one.
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Purposes: Conventions aim to enhance:
- Clarity of drawings
- Dimensioning ease
- Drafting efficiency
- Drawing space usage
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Types of Conventions:
- Alternate position of side view: Used when an object's height is small relative to its depth, positioning the side view beside the top view (examples depicted).
- Incomplete view: (including incomplete side view, partial view, half view, local view) Used to eliminate features not readily apparent from a given viewing direction, optimizing clarity and detail (examples depicted).
- Aligned view: Draws features as they would appear if rotated around a symmetry axis within the primary view. This allows for clear representation of symmetrical and repetitive features (examples depicting holes and ribs, showing both symmetrical and unsymmetrical layout).
- Enlarged view: A portion of a full view that is drawn at a larger scale for increased clarity of detail. The name and scale are to be specified (example provided).
- Non-existing intersection line: Indicates the theoretical intersection of surfaces that have been modified by fillets, rounds, or other shapes (or eliminated by features) (examples in drawings).
- Cylinder intersection: A specific application or type of intersection within engineering drawings (also depicted in a drawing example). Rounded and flat intersections.
- Fillets and rounds: Conventions are used to illustrate surfaces that intersect by showing rounded shapes or smooth transitions to avoid unnecessarily showing intersection lines. (Examples of various intersections).
- Runout: A particular type of convention used in the representation to show how a curve progresses or transitions at its edges or ends. (Examples shown: How to draw a runout).
Example: Already Met Convention Practice
- Using a dash line to represent a hidden edge in a multiview drawing is an example of an already established convention.
Types of Convention Practice
- Alternate position of side view
- Incomplete view: (including incomplete side view, partial view, half view, local view).
- Aligned view
- Enlarged view
- Non-existing intersection line
- Intersection involving a hole in a cylinder
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Description
Explore the essential conventions in orthographic writing that enhance the clarity and efficiency of multiview representations. This quiz covers definitions, purposes, and types of conventions, offering insights into how these practices optimize technical drawings.
