Question 204General Subjects - Assistant Engineer

The correct answer is C) 2 times the wall thickness. The inside diameter of a tube is equal to the outside diameter minus twice the wall thickness. This is a standard formula used in hydraulic system design and engineering. The wall thickness is a critical factor in determining the structural integrity and pressure-holding capacity of a hydraulic line or component, and the inside diameter is what ultimately determines the flow capacity of the system. The other answer choices are incorrect because they do not accurately represent the relationship between the inside diameter, outside diameter, and wall thickness of a tube. Subtracting 1.5 times or 2.5 times the wall thickness would result in an incorrect inside diameter calculation.