Welding Knowledge

Gas can be compressed with

• a cylinder

• lever

• pump

• valve

Two pieces lying flat and end-to-end may be joined by a 

• butt weld

• corner weld

• fillet weld

• lap weld

Acetylene may be dangerous because it is

• compressed

• flammable

• explosive

• all of these

Which gas is not a fuel used for torches?

• acetylene

• oxygen

• propane

• all of these

Oxygen and acetylene hoses can stand pressure because they are

• color-coded

• extra thick

• made of steel

• reinforced

Oxygen hoses and related equipment are color coded

• green

• ivory

• orange

• red

Acetylene hoses and related equipment are color coded

• green

• ivory

• orange

• red

The acetylene pressure to light a torch should be

• 5 psi

• 15 psi

• 25 psi

• 50 psi

Gas leaks are checked with

• compressed air

• flame

• soapy water

• Teflon

The temperatures from gas flames using oxyfuels are

• 150° to 200°F

• 400° to 500°F

• 1,000° to 2,000°F

• 5,000° to 6,000°F