Question 130General Subjects - QMED

The correct answer is D) The torch acetylene inlet hose thread connection is "left handed". The reasoning behind this is that the acetylene hose connection on the torch is designed to be left-handed to prevent the accidental connection of an oxygen hose, which could create a fire or explosion hazard. This left-handed thread is a safety feature specified by regulations to ensure the proper connection of acetylene and oxygen hoses to the respective torch inlets. The other options are incorrect because the oxygen inlet hose and regulator connections are typically right-handed, while the acetylene regulator connection is also right-handed. The use of different thread directions helps ensure the proper and safe connection of the oxyacetylene equipment.