GAS TUNGSTEN ARC WELDING - Quiz

1) What is the name of the defect in which the weld metal did not melt with base metal in TIG process?

Porosity Lack of penetration Lack of fusion Under cut

2) What is the bore dia of ceramic nozzle to avoid porosity while doing TIG, welding?

Small sized Large sized Correct sized Too small sized

3) How to avoid burning fast of tungsten in TIG welding process?

Long arc length By using DCEP By not using shielding By using contaminated base metal

4) Which part the equipment the electron beam is direct and controlled in an electron beam welding process?

Electron gun Electron beam Vacuum chamber Atmosphere

5) What devices are provided to reflect the light coming to the ends of ruby rod in laser beam welding?

Laser tube Reflecting mirrors Flash lamps Shutter