Arc and Gas Welding Objective (MCQ) Test Questions - Set 01 - ObjectiveBooks

Arc and Gas Welding Objective (MCQ) Test Questions - Set 01

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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