WELDABILITY OF STEEL - Practice Mode

1) What is the reason for lack of fluidity in molten metal in braze welding?

Over heating Improper flame Inadequate preheating Improper cleaning and less use of flux

Correct Answer: Inadequate preheating

2) What is the reason for the defect of more spatter during arc welding?

Insufficient root gap Welding current too high Wrong angle of electrode Use of a very short arc length

Correct Answer: Welding current too high

3) What is the welding defect, with no fusion of base metal on root face, side face or between the weld run?

Porosity Under cut Lack of fusion Lack of penetration

Correct Answer: Lack of fusion

4) What is the result of inner cone of flame touching the molten metal while welding?

Cause to over lap Cause to back fire Cause to porosity Cause to flame snape out

Correct Answer: Cause to back fire

5) What defect will occur due to incorrect tilt of blow pipe?

Crater at end Weld porosity Lack of root penetration Under cut in weld joints

Correct Answer: Under cut in weld joints

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