Question 336General Subjects - QMED

The correct answer is D) All have the same outside diameter. The outside diameter of a pipe is determined by the pipe's nominal size, not by the wall thickness. A 3/4" pipe will have the same outside diameter regardless of whether it has a standard, extra strong, or double extra strong wall thickness. The wall thickness only affects the inside diameter of the pipe, not the outside diameter. Therefore, all the options listed have the same 3/4" outside diameter. The other options are incorrect because the outside diameter does not change based on the wall thickness specification. The wall thickness only affects the pipe's weight, pressure rating, and internal volume, not the overall outside diameter.