Aligned sections: Features may be rotated into the plane to show true shape; there is no universal rule that the angle of revolution must always be less than 45°. Evaluate this statement.

Introduction / Context:
Aligned sections rotate certain features (such as webs or spokes) into the cutting plane to present their true shape and size. The technique improves clarity when features lie at an angle to the principal planes.

Given Data / Assumptions:

• Aligned sections allow limited rotation of features purely for depiction, not reflecting actual deformation.
• Standards advise rotating by a convenient angle to show true shape, without prescribing a strict numerical limit.
• The statement imposes an absolute rule of “always less than 45°.”

Concept / Approach:
The goal is readability. The amount of rotation depends on geometry; sometimes small angles suffice, other times larger rotations are necessary to display true shapes effectively. Imposing a fixed maximum angle could prevent accurate depiction.

Step-by-Step Solution:
Identify the purpose: present a feature’s true shape in section.Recognize that rotation angle is chosen for clarity, not to meet a fixed threshold.Evaluate the claim of a hard cap at 45°.Conclude that this rule does not exist; the claim is incorrect.

Verification / Alternative check:
Standard examples show spokes of wheels rotated by whatever angle aligns them with the cutting plane, without referencing a universal numeric limit.

Why Other Options Are Wrong:
“Correct” invents a nonstandard constraint. References to shafts, sheet orientation, or auxiliary views do not alter the flexible nature of aligned section rotation.

Common Pitfalls:
Over-rotating so that the view becomes confusing; failing to label the alignment; mixing aligned sections with offset cuts without clear indication.

Final Answer:
Incorrect