Which of the following mainly decides the current to be employed is arc welding ?

Related Mcqs:

Oxide layer formed on the non-ferrous metal surface after its annealing is__________________?

A. Removed by acid pickling B. Hammered into the surface C. Removed with coarse emery cloth D. Left as such to protect the surface...

Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank) ?

A. H B. H/2 C. H/4 D. H/6...

To counteract the bad effects of strain hardening on a cold formed part, it must be ______________________?

A. Tempered B. Normalised C. Annealed D. Hardened...

The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the _____________ of the slag ?

A. Fluidity B. Basicity C. Acidity D. Viscosity...

Oxyacetylene reducing flame is used while carrying out welding on___________________?

A. Alloy steel B. Grey cast iron C. Mild steel D. High carbon steel...