WELDABILITY OF STEEL - Quiz

1) Which type of cast iron possess higher hardness?

Grey cast iron White cast iron Nodular cast iron Malleable cast iron

2) Which type of cast iron is soft?

Grey cast iron White cast iron Nodular cast iron Malleable cast iron

3) Which size of filler rod should be used to weld 2mm thick MS sheet?

1.6 mm 2.0 mm 2.5 mm 3.15 mm

4) What is the main function of the flux coating in electrodes?

To prevent rusting To stabilize the arc To control arc temperature To increase welding current

5) What is the purpose of oxygen lever in gas cutting?

Pre heat the base metal Push the molten metal Remove the excess metal Release excess oxygen and to push the molten metal