In isometric drawings:a)Two axes are perpendicularb)True measurements ...
Some important points about Isometric Drawing:
- It is a type of pictorial projection in which all three dimensions of an object are shown in one view and if required, the actual sizes can be measured directly from it.
- The perpendicular edges of an object are drawn on 3 axes at 120° to each other.
- All lines parallel to the isometric axes in an isometric drawing are called isometric lines. Non-isometric lines are not parallel to any of the isometric axes. Measurement can be made only on the isometric lines and axes.
There are three types of axonometric projections:
Trimetric projection: All the three axes of space appear unequally foreshortened. None of the angles are equal.
Dimetric projection: Two of the three axes of space appear equally shortened. Two angles are equal.
Isometric projection: All the three axes of space appear equally foreshortened. All three angles are equal.
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In isometric drawings:a)Two axes are perpendicularb)True measurements ...
Isometric Drawings
Isometric drawings are a type of pictorial drawing used to represent three-dimensional objects. They are drawn using a set of three axes that are mutually perpendicular to each other. Isometric drawings are widely used in engineering, architecture, and other fields to represent objects and structures.
Axes Perpendicular
The three axes used in isometric drawings are mutually perpendicular to each other. This means that they form a 90-degree angle where they intersect. The axes are designated as X, Y, and Z, with X and Y being horizontal and Z being vertical. The X and Y axes are drawn at a 30-degree angle to the horizontal plane, while the Z axis is drawn vertically.
True Measurements Along or Parallel
True measurements can be made only along or parallel to the isometric axes. This means that any measurement made perpendicular to the isometric axes will be distorted. To obtain accurate measurements, it is necessary to measure along or parallel to the isometric axes. This is because isometric drawings are a type of oblique projection, which means that the object is projected onto a plane at an angle. This causes distortion in the object's dimensions.
Unequally Distorted
All faces are unequally distorted in isometric drawings. This is because isometric drawings are a type of oblique projection, which causes distortion in the object's dimensions. The amount of distortion varies depending on the angle at which the object is viewed. However, the distortion is consistent throughout the drawing, which means that the relative proportions of the object are maintained.
Conclusion
In conclusion, the correct answer is option 'B', which states that true measurements can be made only along or parallel to the isometric axes. Isometric drawings are a type of pictorial drawing used to represent three-dimensional objects. They are drawn using a set of three axes that are mutually perpendicular to each other. Isometric drawings are widely used in engineering, architecture, and other fields to represent objects and structures.
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