ACCT- WELDER ( PREVIOUS YEAR EXAM 30 QUESTION) PART-2

1. Which of the following welding defects is known as external defects?

a. Overlap
b. Blow hole
c. Slag inclusion
d. Lack of fusion

2. Acetylene gas is produced from ____with water.

a. Carbon
b. Calcium chloride
c. Calcium carbide
d. Calcium carbonate

3. Which of the following power sources is required for GTAW process?

a. Constant voltage
b. Constant current
c. Variable current
d. Both (a) and (b)

4. Projection welding is a/an-

a. Resistance welding
b. Arc welding process
c. Uesd for joining round bars
d. Solid state welding

5. Rails of railway track are welded by-

a. Thermit welding
b. CO2
C. SAW
d. TIG welding

6. The entire arc area is protected from atmospheric contamination by an externally supplied-

a. Filler metal
b. Oxygen only
c. Shielding gas
d. Oxygen and nitrogen

7. Which of the following non-destructive testing methods uses sound waves?

a. Radiography
b. Magnetic particle inspector
c. Ultrasonic
d. Dye-penetrant inspection

8. Which of the following is a type of resistance welding?

a. Seam welding >
b. Diffusion welding
b. Ultrasonic welding
4. Explosive welding

9. What does GMAW stand for?

a. Gas metal Acetylene welding
b. Green metal Arc welding
c. Gas Metal Arc Welding
d. General Machine Arc Works

10. Which of the following is used in submerged arc welding?

a. Light coated electrode
b. Medium coated eletrode
c. Bare electrode
d. Heavily coated electrode

11. On the shop floor, filled gas cylinders shall be kept in -

a. Vertical position
b. Horizontal position
c. Inclined position
d. Any position

12. What is the expansion of TIG?

a. Total Infusion Gas
b. Thermal Ignition Gas
c. Tungsten Inert Gas
d. Torch Inert Gas

13. Magnaflux testing of weld joints is done to check-

a. Weld cracks on surface
b. Improper penetration
c. Blow hole
d. Under cut

14. In thermite welding, the temperature is of the order of- ?

a. 2000°C- 3000°C
b. 700°C- 1000°C
c. 1000°C- 1500°C
d. 1500°C- 2000°C

15. The parts which lie in the same plane and are joined at their edges is known as- ?

a. Corner joint
b. Butt joint
c. Tee joint
d. Lap joint

16.Which of the following is NOT a metal joining process?

a. Brazing
b. Anodising
c. soldering
d. Welding

17. The main materials used in soldering are-

a. Tin and lead
b. Copper and tin
c. Copper and zinc
d. Copper and lead

18. Which alloy is used as spelter for brazing work?

a. Copper + Aluminium
b. Copper + Nickel
c. Copper + Iron
d. Copper + Zinc

19. Chromium is added to steel to improve-

a. Weight
b. Hardness
c. Corrosion resistance
d. Both(a) and (b)

20. Which of the following metal has maximum thermal conductivity?

a. Copper
b. Aluminium
c. Nickel
d. Magnesium

21. Which of the following gas mixtures is NOT used in gas tungsten arc welding?

a. Argon-Helium
b. Argon- Hydrogen
c. Argon-Nitrogen
d. Argon-Carbon dioxide

22. ____process allows fusion welds of great depth with minimum width.

a. Friction welding \ b. Electron beam welding
c. Plasma arc welding d. Ultrasonic welding

23. The melting point of tungsten electrode is-

a. 2500°C
b. 4500°C
c. 3410°C
d. 2000°C

24. Which of the following is a ferrous material?

a. Cast iron
b. Aluminium
c. Copper
d. Nickel

25. Which of the following is a safety device in welding?

a. Welding torch
b. Electrode
c. Apron
d. Cylinder

26. Which joint can be separated by applying heat without damaging the actual particle?

a. Brazing joint
b. Riveted joint
c. Solder joint
d. Nut-bolt joint

27. What is the colour code of pure tungsten tips?

a. Yellow
b. Red
c. Green
d. Brown

28. With respect to welding, HAZ refers to-

a. High Ampere Zone
b. Heat Affected Zone
c. High Altitude Zone
d. High Affected Zone

29. What does the "S" in ER-70S-6 mean?

a. Short circuit
b. Silicon
c. Solid electrode
d. Static

30. The distance that fusion extends into the base metal or previous pass from the surface melted during welding is known as-

a. Dilution
b. Cold lap
c. Depth of fusion
d. Deposition rate