Purpose of section views In technical drawing practice, a section view is commonly used to reveal some or all internal features that would otherwise be hidden in standard orthographic views.

Introduction / Context:
Orthographic projections often hide important interior details behind outer surfaces. Section views solve this by slicing through the object and showing the cut surface with hatching. This improves clarity for manufacturing, inspection, and communication between disciplines.

Given Data / Assumptions:

• The object contains interior cavities, ribs, holes, or channels.
• Hidden lines alone would clutter or obscure the geometry.
• The goal is to communicate internal shape clearly and unambiguously.

Concept / Approach:
A section view is created by passing a cutting plane through an object. Geometry intersected by the plane is displayed as a solid boundary and filled with section lines. Features beyond the plane (not cut) are shown normally without hatching. This technique reduces hidden-line congestion and highlights functional geometry such as bores, keyways, and pockets.

Step-by-Step Solution:

Verification / Alternative check:
Compare the resulting section with the 3D model or physical part to ensure all critical internal features are visible and dimensions can be applied clearly.

Why Other Options Are Wrong:
“Incorrect” contradicts standard drafting practice. Limiting sections to “sheet-metal parts,” “assembly drawings,” or situations where “hidden lines are prohibited” is inaccurate; sections apply across many domains whenever interior clarity is needed.

Common Pitfalls:
Misplacing the cutting plane so key features remain hidden, hatching non-cut surfaces, and leaving unnecessary hidden lines that reduce readability.

Final Answer:
Correct