Higher shielding gas flow rates are required with _____.

Higher shielding gas flow rates are required with _____.
 
  a. welds in deep grooves
  b. low welding currents
  c. slow advance speeds
  d. larger nozzles

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[Ques. 2] Ceriated and lanthanated electrodes are used as non-radioactive substitutes for _____.
 
  a. truncated filler metals
  b. transformer rectifiers
  c. thoriated electrodes
  d. flux cored rods

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[Ques. 3] GTAW commonly uses the same power sources and welding machines used for _____.
 
  a. gas metal arc welding (GMAW)
  b. shielded metal arc welding (SMAW)
  c. self-shielded flux-cored arc welding (FCAW-S)
  d. gas-shielded flux-cored arc welding (FCAW-G)

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[Ques. 4] Titanium becomes sensitive to embrittlement by oxygen, nitrogen, and hydrogen at temperatures above _____.
 
  a. 500F (260C)
  b. 1,000F (538C)
  c. 6,000F (3,316C)
  d. 10,000F (5,538C)

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[Ques. 5] Which welding process is recommended for the repair of a defect on clean magnesium castings?
 
  a. SMAW
  b. GMAW
  c. GTAW
  d. FCAW