WELDABILITY OF STEEL - Practice Mode

1) Which heat treatment process causes the reduction of brittleness in the steel?

By annealing By hardening By tempering By normalising

Correct Answer: By tempering

2) What is the cause of porosity in arc welding?

Damp electrodes Carbon electrodes Over size electrodes Low hydrogen electrodes

Correct Answer: Damp electrodes

3) What is the welding defect in base metal gets melted and a groove formed along the toe of the weld?

Undercut Blow holes Reinforcementc Lack of penetration

Correct Answer: Undercut

4) What is the name of the steel material that is not weldable?

High carbon steel Medium carbon steel Austenitic stainless steel Ferrite and martensitic stainless steel

Correct Answer: Ferrite and martensitic stainless steel

5) What is the defect due to non cleaning the surfaces before welding?

Over lap Lack of fusion Surface porosity Small cracks in bead

Correct Answer: Surface porosity

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