AG Mechanics CDE Practice Exam

Which statement is incorrect about the oxyacetylene rig?

1. Acetylene hose is color-coded.

2. Oxygen hose is green.

3. Oxygen operating pressure is 80 psi.

4. Pressure setting depends on the operation.

The correct answer is: Oxygen operating pressure is 80 psi.

The oxygen operating pressure actually depends on the type of gas being used and the desired flame intensity. The actual pressure setting is typically determined by the equipment manufacturer or the operator's manual. The other incorrect options do not provide enough information to completely determine the safety of the oxyacetylene rig. For example, the color-coding of the acetylene hose is an important safety feature but is not the only safety measure that should be utilized. Similarly, the specific color or designation of the oxygen hose may vary depending on the manufacturer or standards being followed. The pressure setting also depends on factors such as the size of the tip and the specific operation being performed.