Difficulty: Easy
Correct Answer: plane
Explanation:
Introduction / Context:Partial auxiliary views are a clarity tool: instead of redrawing the entire object in the auxiliary plane, we show only what is necessary—typically the features that lie on the inclined plane that requires a true-size representation.
Given Data / Assumptions:
Concept / Approach:By restricting the auxiliary to the plane of interest, the engineer highlights holes, slots, or profiles that need accurate measurement. Other planes are excluded because they would either be redundant or remain correctly shown in principal views.
Step-by-Step Solution:
Identify the inclined plane requiring true-size depiction.Set up an auxiliary plane parallel to that face.Project only the edges/features that lie on the target plane.Crop the auxiliary to a partial region enclosing those features only.Verification / Alternative check:Check dimensional chains: the dimensions placed in the partial auxiliary should pertain to the inclined plane; unrelated dimensions should remain in principal views.
Why Other Options Are Wrong:
Common Pitfalls:Including geometry from adjacent planes, which defeats the purpose and adds confusion.
Final Answer:plane
Discussion & Comments