WELDING - Quiz

1) Why the cylinder key is not removed from the cylinder during welding?

It is meant for either work also In case of emergency it helps to close the cylinders quickly It is used to balance the regulator operation It can be used as a small hammer

2) What is the effect, if interchanged to fix oxygen and acetylene regulators to cylinders?

Spanner damaged Can damage the threads Hose damaged Regulator set properly

3) What is the reason for metal surface to be cleaned before soldering?

Keep surface to bright Easy handling of the soldering iron Solder will never stick to a dirty surface Proper amount of heat absorbed

4) How to achieve a good solder joint?

Use solder with high melting point Prepare metal edges clean Correct solder and flux to be selected Use solder with low melting point

5) What is the reason for weak joint while soldering?

Application of incorrect flux Solder as much surface as possible Move the soldering iron slowly along the work The point of the soldering iron touches only a portion of the area