For proper eye protection when arc welding the minimum shade number of the filter lens should be

• 4
• 6
• 10
• 12

When arc welding do not use cables that are

• welded
• soldered
• cracked, cut, frayed
• spliced

When welding the operator should never lay or stand

• on concrete floors
• on damp ground
• on metal
• on wood structures

Saturation of clothing by moisture or perspiration increases the risk of

• weld burns
• electrical shock
• welder fatigue
• getting a flash

The amperage setting should be set while the welding machine is

• running a bead
• not under load
• warmed up
• turned off

Electrode stubs should be placed

• on the floor
• in a cooling barrel
• on the welding table
• in a container

Hot metal should be handled with

• gloves
• aprons
• tongs or pliers
• rag

When starting to arc weld, the operator should

• turn on the exhaust fan 
• clean area of scraps and tools
• shield others from arc rays
• all of these

When working in an area with other people, what should be done before an arc is struck?

• Check the electrode holder
• Tell others you plan to strike an arc
• Check the cables for cuts and burned insulation
• All of these

If a fellow student’s clothes catches on fire, the first thing one should do is

• throw water on them
• use a fire extinguisher
• wrap the person with a fire blanket
• call the school nurse