Question

Q-5 Hard thin lines for drawing hidden lines to show hidden surfaces or interior details is shown by
B. 6H Pencils
A. HB Pencils
D. 2B Pencils
C. 2H Pencils
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Answer 1

Step-by-step explanation:

It is standard practice to use dashes to represent any line of an object that is hidden from view. A drafter—in deciding whether a line in a view should be represented as hidden or as visible—relies on the fact that in third-angle projection the near side of the object is near the adjacent view, but in first-angle projection the near side of the object is remote from the adjacent view. In Figure 4B (third-angle projection) the top of the front view is near the top view; the front of the top view is near the front view; and the front of the side view is near the front view. In first-angle projection, however, the top of the front view is remote from the top view; the front of the top view is remote from the front view, and the front of the side view is remote from the front view. In a third-angle projection, what is remote in an adjacent view cannot hide what is near in that view.