WELDING - Practice Mode

1) Which type of filler rod is used in gas welding of stainless steel?

Pure aluminium Copper silver alloy Columbium stainless steel Copper coated mild steel

Correct Answer: Columbium stainless steel

2) What will cause if the nozzle touches the molten pool?

Spark Smoke Back fire Flash back

Correct Answer: Back fire

3) What is the function of AC welding transformer?

It converts to low voltage high current ampere It converts to high voltage and low current ampere It converts to low voltage and low current ampere It converts to high voltage and high current ampere

Correct Answer: It converts to low voltage high current ampere

4) What is the disadvantage of AC welding transformer?

More initial cost Not free from arc blow More maintenance cost Not suitable for welding non ferrous metal

Correct Answer: Not suitable for welding non ferrous metal

5) Which arc welding machine can be used anywhere in the field work even away from electric lines?

Rectifier set Motor generator set Engine generator set AC welding transformer

Correct Answer: Engine generator set

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