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Questions and Answers
What does a partial view represent?
What does a partial view represent?
A half view only illustrates the entirety of a part.
A half view only illustrates the entirety of a part.
False
What is the primary function of a local view?
What is the primary function of a local view?
To show only the features that need clarification.
A(n) ______ view can be created by rotating the features of an object about the symmetry axis.
A(n) ______ view can be created by rotating the features of an object about the symmetry axis.
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Match the type of view with its definition:
Match the type of view with its definition:
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Which view is advisable to represent symmetrical positioned features?
Which view is advisable to represent symmetrical positioned features?
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A symmetry symbol is always used in half views.
A symmetry symbol is always used in half views.
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What type of line acts as a symmetry axis in a half view?
What type of line acts as a symmetry axis in a half view?
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What is the purpose of convention practices in orthographic writing?
What is the purpose of convention practices in orthographic writing?
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An aligned view is a type of convention practice in orthographic writing.
An aligned view is a type of convention practice in orthographic writing.
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Name one type of convention practice that involves the adjustment of views to save drawing space.
Name one type of convention practice that involves the adjustment of views to save drawing space.
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In an incompleted side view, features that cannot be clearly seen from a selected viewing direction are __________.
In an incompleted side view, features that cannot be clearly seen from a selected viewing direction are __________.
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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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Match the types of convention practices with their descriptions:
Match the types of convention practices with their descriptions:
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Using a dash line represents a hidden edge in orthographic projection.
Using a dash line represents a hidden edge in orthographic projection.
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The purpose of convention practices includes reducing __________ effort.
The purpose of convention practices includes reducing __________ effort.
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What does an aligned view of holes give the impression of?
What does an aligned view of holes give the impression of?
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An enlarged view is drawn at a smaller scale than the full view.
An enlarged view is drawn at a smaller scale than the full view.
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What is the purpose of applying an aligned convention in orthographic projections?
What is the purpose of applying an aligned convention in orthographic projections?
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An enlarged view must specify both the ______ and scale used.
An enlarged view must specify both the ______ and scale used.
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Match the following terms with their definitions:
Match the following terms with their definitions:
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When is it necessary to show non-existing lines of intersection?
When is it necessary to show non-existing lines of intersection?
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The name of the enlarged view is optional.
The name of the enlarged view is optional.
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What represents the term 'aligned convention' in orthographic views?
What represents the term 'aligned convention' in orthographic views?
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Study Notes
Chapter 5: Convention Practice in Orthographic Writing
- This chapter discusses conventions in orthographic writing, which are commonly accepted practices that help to simplify and clarify technical drawings. These practices disregard some strict rules of orthographic projection.
Topics
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Definition: Conventions are commonly accepted practices that disregard some strict rules of orthographic projection, for more readable and easily understood technical drawings. They aim to improve representation of objects.
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Purposes:
- Improve clarity of drawings
- Simplify dimensioning
- Reduce drafting effort
- Save or efficiently use drawing space
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Types of Conventions:
- Alternate position of side view: Used to save space when an object's height is small compared to its depth, the side view is placed beside the top view.
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Incomplete view:
- Incomplete side views: Side views that omit features not clearly visible from the selected viewing direction.
- Partial view: A view representing only portions of a part, necessary for clarification.
- Half view: A partial view illustrating only half of the part.
- Local view: A view showing only features requiring clarification.
- Aligned view: A view obtained by imagining the object's features rotating about a symmetry axis. Shows features in a principle view.
- Enlarged view: A portion of a full view that is drawn with a larger scale. Clearly identifiable by a name and a specific scale
- Non-existing intersection line: The line of intersecting surfaces is eliminated by fillets or rounds; however, the projection lines are shown as if the fillets and rounds were not present, even though they are.
- Intersection (Hole on a cylinder): True projection representation when holes are large. When holes are small, simplified convention is used.
Examples
- Already met convention practice: A dash line represents a hidden edge, simplifying the view.
- Multiple examples of specific types of conventions (aligned, partial, half, etc.): Demonstrates these practices using specific technical diagrams/drawings. These examples include, holes, ribs, and keyways.
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Description
This quiz covers Chapter 5 on convention practices in orthographic writing, focusing on commonly accepted methods to enhance clarity in technical drawings. It outlines the purposes, types of conventions, and their significance in simplifying representation while disregarding some rigorous rules of orthographic projection.
