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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