Welding Technology Mid - I, September - 2014

 August 22, 2015     VIKRAM     1674

1. 

The main criterion for selection of electrode diameter in arc welding is material to be used

  • A. 

    type of welding process

  • B. 

    thickness of material

  • C. 

    voltage used

  • D. 



2. 

The material used for coating the electrode is called

  • A. 

    protective layer

  • B. 

    binder

  • C. 

    flux

  • D. 

    deoxidizer



3. 

Pick up the incorrect statement about MIG welding.

  • A. 

    No flux required

  • B. 

    High welding speed

  • C. 

    Increased corrosion resistance

  • D. 

    Even unclean surface can be welded to obtain sound welds.



4. 

Projection welding is

  • A. 

    Continuous spot welding process

  • B. 

    Multi-spot welding process

  • C. 

    Used to form mesh

  • D. 

    Used to make cantilevers



5. 

Welding process in which two pieces to be joined are overlapped and placed between two electrodes is known as

  • A. 

    Percussion welding

  • B. 

    Projection welding

  • C. 

    Seam welding

  • D. 

    Spot welding



6. 

aser welding finds widest application in

  • A. 

    heavy industry

  • B. 

    structural work

  • C. 

    process industry

  • D. 

    electronic industry



7. 

Which of the following carbon steels is most weldable?

  • A. 

    0.15% carbon steel

  • B. 

    0.3% carbon steel

  • C. 

    0.5% carbon steel

  • D. 

    0.75% carbon steel



8. 

Which of the following welding process uses consumable electrode?

  • A. 

    TIG

  • B. 

    MIG

  • C. 

    Thermit

  • D. 

    Laser



9. 

Arc welding uses which of the following electric supply?

  • A. 

    A. C.

  • B. 

    D. C.

  • C. 

    both A.C. and D. C.

  • D. 

    spiral waveform



10. 

TIG welding is best suited for welding

  • A. 

    Mild steel

  • B. 

    Aluminium

  • C. 

    Stainless steel

  • D. 

    Carbon steel



11. 

Filler material in welding should have -------------------------------.



12. 

A pool of molten metal is used in……….. welding.



13. 

The striking voltage as compared to voltage during welding in arc is ----------------.



14. 

Seam welding is ---------------------------.



15. 

In the manual TIG welding, the angle of electrode holder with the direction of welding is ------------------.



16. 

The amperage to be used in arc is dependent upon ----------------.



17. 

The vacuum maintained in the electron beam welding machine is ------------.



18. 

The electrostatic welding is accomplished by----------------------.



19. 

In -------------------- welding process, the parts are heated to welding temperature and then mechanical force is applied at the ends to unite the metals.



20. 

A weldment consists of ------------------------.



  Related Links
R09 - I Mid - Term Examinations, September - 2014 
R09 - II Mid - Term Examinations, November - 2014