WELDING

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1.The colour of oxygen cylinder is and the acetylene gas is stored in cylinders.

2. A is used to control the working pressure of the gases.

3. Flame is produced at the tip of the when the gases are ignited.

4. Oxy acetylene flame emits ultraviolet and rays.

5. In order to protect the eyes of the welder, should be used by him.

6. are useful for cleaning the weld before and after the welding process.

7. The size of the flame can be altered by varying the ratio of and .

8. In flame the supply of acetylene will be more than oxygen to produce this flame.

9. flame is obtained by supplying more oxygen than acetylene.

10.Separate are used to connect the two cylinders with the welding torch through regulators.