What feature does a Phantom Line represent in technical drawings?

• A. Hidden features
• B. Alternate positions or movement
• C. Center points
• D. Dimensions of objects

Answer: (B)

A Phantom Line is specifically used in technical drawings to depict alternate positions or movement of an object. This type of line is typically composed of long dashes with short spaces in between, distinguishing it from other line types. When an object has multiple configurations, or when illustrating different positions an item can assume – for example, the extension of a moving part – Phantom Lines effectively communicate these variations to the viewer. This helps in visualizing how components interact or shift in relation to one another during operation, making it a crucial aspect in the design and engineering fields.

While hidden features, center points, and dimensions are represented by different types of lines and markings in technical drawings, the function of a Phantom Line is distinctly focused on showing movement or alternative positions.