ACTT- WELDER (Previous year exam 20 question) part-1

1.What is the colour of the hose connected to the oxygen cylinder?

1a. Blue
2. b. Red
3. c.Green
4d. Yellow

2. Which welding process is used to join two thick plates in single pass?

a. Oxy-acetylene welding
b. TIG
C. Electroslag welding
d. MIG

3. In oxy-acetylene welding, the flame temperature is-

a. 500°C-1000°C
b. 3000°C-4000°C
c. 1000°C-1500°C
d. 1500°C-2500°C

4. For light coated electrode, the coating factor is about-

a. 1.25 to 1.3
b. 1
c. 1.4 to 1.6
d. 1.6 to 2.2

5. With which of the following welding is Spot welding associated?

a. Resistance welding
b. Gas welding
c. Arc welding
d. Solid stae welding

6. In reverse polarity welding, electrode holder is-

a. Earthed and work is positive
b. Connected to the negative and work to positive
c. Connected to the positive and work to negative
d. Earth and work is negative

7. Which of the following is an inert gas?

a. Oxygen
b. Hydrogen
c. Argon
d. Nitrogen

8. For soldering of galvanised iron sheets, the flux used is-

a. Hydrochloric acid >
b. Ammonium chloride
c. Boric acid
d. Both (b) and (c)

9.What is the colour of oxygen cylinder?>

a. White
b. Maroon
c. Black
d. Blue

10. The Tee fillet joint means ___ angle on both sides.

a. 45°
b. 120°
c.90°
d. 180°

11. The welding which uses an exothermic chemical reaction for devloping high temperature is called-

a. Thermit welding
b. Arc welding
c. Tungsten inert gas welding
d. Soldering

12. In arc welding, arc initiation voltage is of the order-

a. 60-100V
b. 100-140V
c. 20-60V
d. 140-180V

13. What is the expansion PWHT in welding?

a. Post Weld Heat Treatment
b. Postal Weld Horizontal Treatment
c. Post Weld Heating Torch
d. Pre Weld Heating Torch

14. How many control valves does the cutting blowpipe have?

a. Three
b. Two
c. One
d. Four

15. The flux used for brazing is called ?

a. Gun metal
b. Borax
c. Zinc chloride
d. Rosin

16. Which of the following is solid state welding?

a. Electro gas welding
b. Explosive welding
c. Projection welding
d. Thermit welding

17. The operation involving light and rapid hammering on the welding to relieve stess is called-

a. Peening
b. Heat treatment
c. Straightening
d. Annealing

18. Which of the following gas mixture is used generally for cutting?

a. Oxygen-hydrogen
b. Hydrogen-acetylene
c. Acetylene-argon
d. Oxygen-acetylene

19.What is the range of voltage maintained during resistance welding process ?

a. 20V - 12V
b. 40V - 52V
c. 4V - 12V
d. 50V - 62V

20. Which of the following is destructive testing?

a. Tensile test
b. Radiography
c. Dye penetrant
d. Magnaflux