Lakshya Education MCQs

Question: In dc arc welding, if leads are arranged in work as negative pole of the welding arc and electrode as positive pole of the welding arc, the arrangement is known as
Options:
A. Fusion
B. Reverse polarity
C. Forward welding
D. Direct polarity
Answer: Option B

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Question 1. If the flame of the welding torch is directed towards the progress of welding, then what will you call the welding technique?
  1.     Forehand welding
  2.     Flux cored ARC welding
  3.     Electro slag welding
  4.     Pulsed spray welding
Answer: Option A
Question 2. Hot rolling of mild steel is carried out
  1.     At recrystallization temperature
  2.     Between 100⁰C to 150⁰C
  3.     Between recrystallization temperature
  4.     Above recrystallization temperature
Answer: Option D
Question 3. Cold working of steel is defined as working
  1.     At its recrystallisation temperature
  2.     Above its recrystallisation temperature
  3.     Below its recrystallisation temperature
  4.     At two thirds of the melting temperature of the metal
Answer: Option C
Question 4. Cold working of steel is defined as working
  1.     At its recrystallisation temperature
  2.     Above its recrystallisation temperature
  3.     Below its recrystallisation temperature
  4.     At two thirds of the melting temperature of the metal
Answer: Option C
Question 5. Hot rolling of mild steel is carried out
  1.     At recrystallization temperature
  2.     Between 100⁰C to 150⁰C
  3.     Between recrystallization temperature
  4.     Above recrystallization temperature
Answer: Option D
Question 6. In dc arc welding, if leads are arranged in work as negative pole of the welding arc and electrode as positive pole of the welding arc, the arrangement is known as
  1.     Fusion
  2.     Reverse polarity
  3.     Forward welding
  4.     Direct polarity
Answer: Option B

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