Oxyacetylene Torches

What are the three elements needed to start a fire?

• Oxygen, carbon dioxide, and nitrogen

• Heat, friction, and a fuel source

• Water, oxygen, and heat

• Electricity, water, and fuel

Why should petroleum products not be used around oxygen tanks?

• They are too expensive

• They can freeze the valve

• They can corrode the tank

• They can ignite and cause a fire

What color is associated with oxygen in the oxy-acetylene setup?

• Red

• Blue

• Green

• Yellow

Why is it important to back off the pressure adjustment knob before opening the tank?

• To save gas

• To prevent overfilling the tank

• To avoid rupturing the diaphragm

• To make it easier to close later

What is the purpose of a flashback arrestor?

• To cool down the gas

• To prevent flames from entering the hose

• To measure gas flow

• To increase the flame size

What is the correct way to shut down the oxy-acetylene system?

• Leave it open for slow shutdown

• Oxygen first, then acetylene

• Both at the same time

• Acetylene first, then oxygen

How can you prevent a dirty tip while cutting?

• By applying oil to the tip

• By cutting faster

• By using more oxygen

• By keeping a proper distance

What is the correct procedure for changing the tip size for cutting different material thickness?

• Adjust the working pressures accordingly

• Use the same pressure for all tip sizes

• Only change the tip, not the pressure

• Turn off the oxygen while changing tips

What is a scarfing tip used for?

• Heating metal for bending

• Cutting flush with the material surface

• Measuring the thickness of the metal

• Creating decorative patterns

What is the main reason for using a rosebud tip?

• For cooling metal quickly

• For welding small parts

• For preheating and post-heating

• For detailed cutting