In gas welding, which gases are not used:
The welding torch angle in the forehand gas welding technique is:
Thermit welding is a form of :
In laser welding the laser material used is :
In TIG welding, the electrode is made of :
After fusion welding, the nature of residual stress in the weldment area is :
Which of the carbon steel has maximum weldability:
In brazing the usual melting temperature of the filler rod is :
The amount of current necessary in resistance welding is of the order of:
What happens to a metal deposition if a welding operation is performed with reverse polarity?