The high-voltage, low-amperage current supplied to welding machines by commercial power lines is ...

The high-voltage, low-amperage current supplied to welding machines by commercial power lines is known
  as _____.
 
  a. primary current
  b. commercial current
  c. ordinary current
  d. secondary current

 Q. 2

A type of personal protective equipment that is not usually needed when installing insulation is _____.
 
  a. earplugs
  b. safety goggles
  c. gloves
  d. hard hat

 Q. 3

Before cutting or welding a container that might have contained a hazardous substance, check the label, and
  then _____.
 
  a. call the project safety officer
  b. refer to the safety data sheet
  c. consult your supervisor
  d. go to the OSHA website