Practice Test: Question Set - 01
1. What is the dia of medium coated MS electrode used in fillet weld lap joint with 110/120 Amps welding current?
- (A) 1.0 mm
- (B) 1.5 mm
- (C) 2.5 mm
- (D) 3.15 mm
2. Which gas cutting process is suitable for all position, location and under water?
- (A) Gas cutting
- (B) Plasma
cutting
- (C) Manual
cutting
- (D) Machine
cutting
3. Which type of hardening used eddy current in the metal bar?
- (A) Flame
hardening
- (B) Nitriding
hardening
- (C) Induction
hardening
- (D) Annealing
hardening
4. What is the purpose of annealing?
- (A) Improve
hardness
- (B) Improve
machinability
- (C) Improve
brittleness
- (D) Improve
weldability
5. Which is the stage of heat treatment process?
- (A) Cooling the
metal
- (B) Heating the
metal slowly
- (C) Hold at a
given temperature
- (D) Heat and
cool the metal as soon as possible
6. What is the Quenching media of normalizing?
- (A) Water spray
- (B) Open air
- (C) Oil bath
- (D) Water bath
7. What is the color of hose carrying acetylene?
- (A) Red
- (B) Black
- (C) Maroon
- (D) Peacock blue
8. What is the purpose of hardening?
- (A) Increase
ductility
- (B) Increase
malleability
- (C) Increase
strength
- (D) Increase
brittleness
9. What is the color of acetylene gas cylinder?
- (A) Red
- (B) Maroon
- (C) Black
- (D) Peacock blue
10. What is the advantage of using rectifier set in arc welding machine?
- (A) Suitable for
all ferrous and non-ferrous
- (B) Initial cost
is lower
- (C) Maintenance
cost in less
- (D) Not special
safety precaution required
11. What is the importance of case hardening?
- (A) To increase
softness
- (B) To withstand
wear resistance
- (C) To withstand
heavy load
- (D) To decrease
the brittleness
12. Which type of physical transformation takes place during arc welding process?
- (A) Color
transfer
- (B) Metal
transfer
- (C) Current
transfer
- (D) Heat
transfer
13. Which solution is used for acetylene gas connection leakage test?
- (A) Kerosene
- (B) Naked fire
- (C) Soap water
- (D) Fresh water
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