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MCQs

Total Questions : 137 | Page 10 of 14 pages
Question 91. The welding process in which no filler metal is used is classified as ___________
  1.    Autogenous
  2.    Homogeneous
  3.    Heterogeneous
  4.    Fusion
 Discuss Question
Answer: Option A. -> Autogenous
Answer: (a).Autogenous
Question 92. What is the color of an acetylene cylinder in case of gas welding?
  1.    Gray
  2.    Black
  3.    Maroon
  4.    Light blue
 Discuss Question
Answer: Option C. -> Maroon
Answer: (c).Maroon
Question 93. The pressure of acetylene in welding torch for oxy-acetylene welding is maintained at _________
  1.    0.66-1.0 bar
  2.    0.1-3.5 bar
  3.    0.5-3.5 bar
  4.    1.0-4.5 bar
 Discuss Question
Answer: Option A. -> 0.66-1.0 bar
Answer: (a).0.66-1.0 bar
Question 94. What is the temperature of arc needed for arc welding?
  1.    600-1000°C
  2.    2000-4000°C
  3.    5000-6000°C
  4.    6000-8000°C
 Discuss Question
Answer: Option C. -> 5000-6000°C
Answer: (c).5000-6000°C
Question 95. A small depression formed in the parent metal is called _________
  1.    Arc length
  2.    Arc carter
  3.    Depth of fusion
  4.    Slag length
 Discuss Question
Answer: Option B. -> Arc carter
Answer: (b).Arc carter
Question 96. What is the level of efficiency of a transformer as a welding machine?
  1.    10-20%
  2.    30-60%
  3.    60-80%
  4.    80-85%
 Discuss Question
Answer: Option D. -> 80-85%
Answer: (d).80-85%
Question 97. Which electrode material is used for welding of carbon steel?
  1.    Cast aluminum alloy rod
  2.    Soft steel wire
  3.    Copper rod
  4.    Drawn brass rod
 Discuss Question
Answer: Option B. -> Soft steel wire
Answer: (b).Soft steel wire
Question 98. Which electrode material is used for welding of wrought iron?
  1.    Cast iron rods
  2.    Low carbon steel rod
  3.    Mild steel copper coated rod
  4.    Low alloy steel rod
 Discuss Question
Answer: Option B. -> Low carbon steel rod
Answer: (b).Low carbon steel rod
Question 99. ___________ is used as an inert gas for metal inert gas welding.
  1.    Argon
  2.    Radon
  3.    Neon
  4.    Nitrogen
 Discuss Question
Answer: Option A. -> Argon
Answer: (a).Argon
Question 100. Which electrode is used in the process of TIG welding?
  1.    Tungsten
  2.    Titanium
  3.    Tin
  4.    Tellurium
 Discuss Question
Answer: Option A. -> Tungsten
Answer: (a).Tungsten

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