Welding Defects & Welding Technique

17.The distance between the root and toe of a fillet weld is called…
A. root gap   
B. leg length    
C. reinforcement    
D. throat thickness

18. Name the weld defect which occurs due to improper cleaning of the mild steel sheet edge and surface
A. lack of root penetration  
B. burn through   
C. undercut   
D. porosity

19. Which of the following mechanical properties of metals gives resistance to pulling forces?
A. toughness    
B. ductility   
C. hardness    
D. tensile strength

20. The angle of below pipe to the line of weld in leftward welding technique is…
A. 40 to 50◦    
B. 50 to 60◦     
C. 60 to 70◦     
D. 70 to 80◦

21. The pressure of acetylene gas for gas cutting a 10mm M.S plate is…
A. 0.15 kgf/cm2     
B. 0.5 kgf/cm2      
C. 1.0 kgf/cm2    
D. 1.5 kgf/cm2

22. What size of the cutting nozzle you will select for cutting 10mm thick mild steel?
A. 0.8 mm   
B. 1.2 mm   
C. 1.6 mm   
D. 2.0 mm

23. The angle of filler rod in case of rightward welding technique is…
A. 10 to 20◦     
B. 20 to 30◦    
C. 30 to 40◦    
D. 40 to 50◦

24. One of the advantages of the high pressure system of gas welding is…
A. it is cheaper   
B. it is portable   
C. it is less dangerous   
D. it does not require a skilled welder

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