In oblique projection methods, cavalier uses full-scale receding lines, while cabinet uses half-scale receding lines to reduce distortion. Evaluate the statement: “In cabinet oblique projection, receding lines are drawn at full scale.”

Difficulty: Easy

Correct Answer: Incorrect

Explanation:


Introduction / Context:
Oblique projection is a pictorial method. Two common variants are cavalier and cabinet. The difference lies in how receding (depth) axes are scaled to control visual distortion. We assess the given claim about cabinet oblique.


Given Data / Assumptions:

  • Cavalier oblique: receding lines drawn at full scale.
  • Cabinet oblique: receding lines drawn at half scale (or approximately 0.5).
  • Front face remains in true scale for both.


Concept / Approach:
Halving the depth in cabinet oblique prevents objects from looking unnaturally elongated along the receding axis, which happens when full scale is used.


Step-by-Step Solution:
1) Identify projection type: cabinet.2) Apply rule: depth scale factor = 1/2.3) Compare with claim “full scale”; conflict indicates the claim is false.


Verification / Alternative check:
Textbook conventions and drafting standards teach cabinet = half depth, cavalier = full depth, confirming the conclusion.


Why Other Options Are Wrong:
“Correct”: Reverses the cabinet rule.“Only front view is scaled”: Front face is true size; scaling applies to depth, not front.“Only verticals are halved”: Depth axis, not verticals, is reduced.


Common Pitfalls:
Mixing up cabinet with cavalier; forgetting to reduce dimensions only along the receding axis rather than all axes.


Final Answer:
Incorrect

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