GAS TUNGSTEN ARC WELDING - Practice Mode

1) Why argon gas is used in welding of stainless steel welding in TIG welding process?

Inert gas protects the weld It helps in melting the electrode It prevents porosity It is cheap

Correct Answer: Inert gas protects the weld

2) Which welding machine is to be used for welding of aluminium by TIG welding process?

AC welding machine DC welding machine AC DC transformer DC transformer

Correct Answer: AC welding machine

3) What is the defect caused by high current in TIG welding?

Crack Porosity Under cut Lack of penetration

Correct Answer: Under cut

4) What is the defect while TIG welding if the current is too low?

Crack Porosity Under cut Lack of fusion

Correct Answer: Lack of fusion

5) What is right about DCRP electrode TIG welding ?

Improper tungsten size Improper shielding gas flow Improperly prepared tungsten Weld circuit polarity is incorrect

Correct Answer: Weld circuit polarity is incorrect

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