When welding overhead, it is best to use a hard hat with a(n) _____.

When welding overhead, it is best to use a hard hat with a(n) _____.
 
  a. aluminum bill
  b. polyester cap
  c. rear deflector
  d. light color

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[Ques. 2] Which of the following common welding components are missing from the aluminum GTAW process,
  resulting in minimal corrosion from slag entrapment?
 
  a. Flux
  b. Argon
  c. Inert gas
  d. Backing gas

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[Ques. 3] When used for GTAW on aluminum pipe, a push angle provides base-metal cleaning is provided _____.
 
  a. by the action of the electrode
  b. by the action of the flux
  c. due to increased arc length and the DC voltage
  d. on the positive portion of the AC voltage cycle

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[Ques. 4] To prevent heat buildup in the weld and form smaller puddles, the welder can increase the _____.
 
  a. voltage
  b. arc length
  c. bead width
  d. travel speed

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[Ques. 5] A technique used to prevent contamination of the electrode when feeding the filler rod into the weld puddle
  is to _____.
 
  a. change from a push angle to a slight drag angle
  b. change the work angle about 10 degrees temporarily
  c. move the torch toward the back edge of the puddle
  d. move the torch toward the leading edge of the puddle