Metals 1 Spring Final

What are three safety precautions you should take when lighting an oxy-acetylene flame?

• Wear safety goggles, check for leaks, and use the correct lighting procedure.

• Use bare hands to check for leaks, light the torch near flammable materials, and ignore ventilation.

• Do not wear protective gear, open valves quickly, and face the flame directly.

• Light the torch with a match, keep cylinders in a closed space, and avoid checking hoses.

How many turns does it take to open the acetylene on the nozzle?

• 1/10 turn

• 1/2 turn

• 1 turn

• 2 turns

How many turns does it take to open the oxygen on the nozzle?

• 1 turn

• 2 turns

• 3 turns

• 4 turns

How many turns does it take to open the acetylene on the tank?

• 1/4 turn

• 1 turn

• 2 turns

• Fully open

How many turns does it take to open the oxygen on the tank?

• 1 turn

• 1/4 turn

• 3 turns

• 1/2 turn

List three maintenance practices regarding the use of welding machines.

• Cleaning the machine, checking cables for damage, and regular lubrication

• Painting the machine, storing it outdoors, and ignoring cable wear

• Using the machine without inspection, overloading it, and skipping maintenance

• Leaving the machine on after use, using wet hands, and not checking connections

Which of the following is a precaution that should be followed in regards to the use of welding cables?

• Use cables with damaged insulation.

• Keep cables away from water and oil.

• Allow cables to overheat.

• Use undersized cables for the job.

Which of the following are hazards that the welder should guard against in the application of the arc welding process?

• Electric shock, fumes and gases, fire and explosion, and arc radiation

• Noise pollution, water leakage, dust accumulation, and vibration

• Overheating, rusting, color fading, and paint peeling

• Loose clothing, improper footwear, jewelry, and sunglasses

Which of the following are precautions that may be taken to guard against electrical shock?

• Wearing insulated gloves

• Using wet hands to handle electrical equipment

• Keeping electrical devices away from water

• Ignoring damaged wires

When welding, which of the following are three pieces of required personal protective equipment (PPE)?

• Safety glasses, welding helmet, gloves

• Sandals, apron, earplugs

• Baseball cap, scarf, sneakers

• T-shirt, shorts, sunglasses