Multiple Choice Questions on Gas and Arc Welding - Set 02 - ObjectiveBooks

Multiple Choice Questions on Gas and Arc Welding - Set 02

Practice Test: Question Set - 02


1. Which type of hardening used for cam shaft production?
    (A) Annealing
    (B) Carburizing
    (C) Normalizing
    (D) Induction hardening

2. Which one of the following metals cannot be welded by AC welding machine?
    (A) Brass
    (B) Cast iron
    (C) Mild steel
    (D) High carbon steel

3. What is the electrode angle with weld line?
    (A) 70° to 80°
    (B) 50° to 60°
    (C) 45° to 50°
    (D) 35° to 40°

4. What is the color of hose carrying oxygen?
    (A) Red
    (B) Black
    (C) Maroon
    (D) Peacock blue

5. Which is the safety method for carry the oxy-acetylene gas cylinders?
    (A) Rolling
    (B) Sliding
    (C) Dragging
    (D) Use a trolley

6. Which one is the heat treatment process?
    (A) Casting
    (B) Machining
    (C) Welding
    (D) Annealing

7. Which quenching media applied in the flame hardening process?
    (A) Still air
    (B) Oil bath
    (C) Brine solution bath
    (D) Water spray

8. What is the advantage of AC arc welding machine?
    (A) More initial cost
    (B) Freedom from arc blow
    (C) More maintenance cost
    (D) Unsuitable for non ferrous metal

9. What is the color of oxygen gas cylinder?
    (A) Red
    (B) Maroon
    (C) Black
    (D) Peacock blue

10. Which machine can be used anywhere in the field for welding away from electric main supply?
    (A) Motor generator set
    (B) Engine generator set
    (C) AC arc welding machine
    (D) AC welding transformer with a rectifier

11. Which is protecting the eyes from harmful rays of the electric arc welding?
    (A) Helmet
    (B) Lather apron
    (C) Leather gloves
    (D) Welding helmet screen

12. Which valve to be closed first while gas flame snaps out and back fire?
    (A) Oxygen valve in cylinder
    (B) Oxygen valve at blow pipe
    (C) Acetylene valve in cylinder
    (D) Acetylene valve at blow pipe

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