Learning with fun unit 5 MPR MCQ

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herewith posting MCQ on Unit 5 for Manufacturing process MPR-22446

Unit 5 welding MCQ

1. The consumable bare Wire is fed automatically through a nozzle into the Weld in

a. TIG welding   b.MIG welding   c. Seam welding d. None of them

2. Soldering is carried out at ____ degree tempertaure       

a. above 400  b.below 200  c. above 500  d. none of them

3. In soldering alloy of __________ is used as soldering material.

a. Copper and zinc  b.Copper and tin  c. Lead and tin  d. None of them

4. In Brazing  alloy of __________ is used as soldering material.

a. Copper and zinc  b.Copper and tin  c. Lead and tin  d. None of them

5. _____ welding is carried out in vacuum

a. EBW     b.LBW      c.PAW    d. None of them

6. Brazing is carried out at ____ degree tempertaure

a. above 420   b.below 200  c. above 500  d. none of them

7. ____________ is suitable for welding of cutting tool tips with body of tool

a. Brazing   b. soldering  c. LBW  d. EBW

8. Which is not type of resistance welding?

a. Spot b. Seam c. projection   d. continuous

9. Gas welding consists of ___________type of  flames

a. Carburising  b. oxidizing c. Neutral  d. all of the above

10. Neutral flame contains __________ amount of oxygen and acetylene

a. equal  b. more oxygen  c. more acetylene  d. none of them

11. Carburising flame contains __________

a. equal  b. more oxygen  c. more acetylene  d. none of them

12. Oxidizing flame contains __________

a. equal  b. more oxygen  c. more acetylene  d. none of them

13. TIG welding uses _____________ electrode

a. consumable  b. non consumable  c. no   d. none of them

14. MIG welding uses _____________ electrode

a. consumable  b. non consumable  c. no   d. none of them

15. Heat produced in arc welding is given by

a. H= I²R/t  b. H= I²Rt   c. H= IR²t   d. None of them

16. Projection welding is.......

 a.Multi-spot welding process    b. Continuous spot welding process

 c.zigzag      d.none of them

17. Seam  welding is.......

 a.Multi-spot welding process    b. Continuous spot welding process  c.zigzag      d.none of them

18. TIG welding is best suited for welding.......

a. Stainless steel  b.mild steel  c. aluminum    d. none of them

19. Arc-welding uses following electric supply .........

  a. A.C. b. D.C.    c..Both AC and DC d. all of them

20. Which of the following is an example of fusion welding?

a.Arc welding    b.Forge welding   c.Resistance welding    d. Thermit welding with pressure

21.The commonly used flux in brazing is

a.Borax    b.Rosin   c. Lead sulphide    d.Zinc chloride

22.Which of the following types of fuel gas is commonly used in gas welding?
a) Biogas   b) Coal gas   c) Acetylene  d.None of them

23.Which flame is suitable for welding of ferrous metals, Cu and Al alloys?
a. Oxidising flame  b. Carburising flame  c. Neutral flame d. None of the above

24. The temperature of arc in case of arc welding is
a. 2000°C    b. 2600°C    c. 3000°C   d. 3600°C

25.Which of the following welding process uses non-consumable electrode?
a. Gas tungsten arc welding (TIG)    b. Shielded metal arc welding
c. CO2 shielded welding    d. Gas metal arc welding (MIG)