Red Seal Plumbing Practice Exam

In a full sectional view, how is the cutting plane described?

1. Passing through only a portion of the part

2. Passing through external surfaces only

3. Passing through the part along the center line on its full diameter

4. None of the above

The correct answer is: Passing through the part along the center line on its full diameter

In a full sectional view, the cutting plane is described as passing through the part along the center line on its full diameter. This means that the cutting plane will cut through the entire part, revealing both internal and external details. Option A is incorrect because a partial sectional view would only show a portion of the part, not the entire thing. Option B is incorrect because it would only show the external surfaces and not reveal any internal details. Option D is also incorrect because there is a correct answer, and the cutting plane cannot pass through some, but not all, of the part.