Welding

What terminology correctly identifies the reduction in voltage, caused by resistance, that occurs between the power supply and the load?

• Voltage drop
• Ground fault
• Power factor
• Short circuit

Which of the following lens shades is most effective at reducing the brilliancy of light and screening out the harmful infrared and ultra-violet rays produced during arc welding?

• #12 shade lens
• #8 shade lens
• #4 shade lens
• #2 shade lens

What colors are appropriate for the oxygen hose on oxyacetylene cutting and welding equipment?

• Either a black hose or a green hose are approved colors
• Either a yellow hose or a red hose are approved colors
• Either a purple hose or an orange hose are approved colors
• Either a white hose or a clear hose are approved colors

When an oxyacetylene cutting torch is operating, what does a loud squealing or hissing noise indicate?

• The oxyacetylene mixture is igniting inside the torch in an unsafe manner
• The oxyacetylene equipment is properly adjusted and operating safely
• The acetylene pressure is much too high for the cutting operation
• The oxygen pressure is much too high for the cutting operation

What is the name of the metal joining process where two pieces of metal are heated to the point of melting and the melted metals flow together?

• Fusion welding
• Braze welding
• Solder welding
• Sweat welding

What type of flame is used for most oxy-fuel welding procedures when welding on mild steel?

• Neutral flame
• Acetylene flame
• Carburizing flame
• Oxidizing flame

What electrical device is a necessary component of an electrical welding machine and is used to step up or step down the voltage and amperage as needed to perform welding operations?

• Transformer
• Alternator
• Generator
• Rheostat

Which of the following safety concerns related to welding is more likely to occur gradually over an extended period of time?

• Hearing loss caused by extended exposure to elevated sound levels
• Injury to eyes from flying metal or sparks
• Blisters on eyes from watching a welding arc without proper eye protection
• Burns from the handing of or coming in contact with heated metals

Which of the following statements is correct with respect to safety glasses while welding?

• Safety glasses should be worn continuously while working with or near metal working activities
• Safety glasses are not needed for other metal working activities as long as a face shield is worn while welding
• Safety glasses should be darkly tinted to protect the eyes at all times while performing metals working activates
• Safety glasses are not needed when a welding helmet is worn, because the helmet protects the eyes from all welding-related hazards

In electrical terminology, what is the meaning of the abbreviation AC?

• Alternating Current
• Arc Current
• Always Current
• Acetylene Current